Adding to a cells value based on two other cells - google-sheets

Question

I'm wondering how I would go about adding to a cell based on two other cells.
For example, I'm creating a Google Sheets document to track profit & loss on certain things in an online game I play.
I'll try to explain this as best as possible.
If cell B71 is equal to the string in cell B7, increase the value in cell D71 equal to the number in cell D7.
However, the values will need to be compared to various other things depending on the item required.
For example, the string in cell B7 might change depending on what specific type of item is needed for that day as it does change daily.
I have cells near the bottom of the sheet which list the different type of item which will show the total amount of items used in that month.
I've tried to explain this a little better as requested below
I'm trying to make a spreadsheet that keeps track of the quantity of a specific item I use in a game for a daily task. This task can be done daily, and to keep track of profit & loss, I have created a spreadsheet to keep track of this.
So, each day, there are three different types of items (runes) that can be used in the machine to create an item called 'Vis Wax'. As Runes are cheap, creating the vis wax can generate a good profit. (I love working with data, hense the spreadsheet.
The image above shows what a daily section looks like. I input each type of rune (has to be 3), input the quantity used and the amount each rune is worth to create the total cost under Total.
Further down below, this table has been created
This will keep track of each rune and the amount used during that month.
So with that said, I'm looking for a solution so that if Air rune is entered in ANY of them slots with the QUANTITY used, it'll update that table accordinly (as well as the other runes that are used too). I've tried nested IF statements, but don't seem to have any luck. With the amount of checks that seem to be happening, I can't seem to find a working solution. As Air Rune might be in slot 1 one day, then slot 3 the next day. So it seems each cell in the Quantity Table will need to compare EACH cell in the daily section, to each rune type that can be used.
Hopefully that has explained it a little better.
Spreadsheet Link
https://docs.google.com/spreadsheets/d/1sYLpZJ46IpNk52gxMoJOIZsOCWToLkC4FF83RBncCf0/edit?usp=sharing

Answer 1

I would suggest you to use a different structure and take all the data from one day in one column, something like this:
In this way you will be able to extend the days keeping the formulas in a really simple way. Below, I will explain some useful formulas that you can use to lighten your work:
Day: =text(DAY(B2),"dddd")
Rune type: Check Data validation to create a drop-down list of your rune types
For counting how many runes have you used you can use SUMIFS function. It returns the sum of a range depending on multiple criteria. In your case, you need apply it three time per rune, as you can have the same rune in three different places. You see it with the following image:
The formula is: =SUMIFS($B$8:$H$8,$B$7:$H$7,A25) + SUMIFS($B$12:$H$12,$B$11:$H$11,A25) + SUMIFS($B$16:$H$16,$B$15:$H$15,A25). In this way you only need to write it once and you can fill the rest of the runes just dragging the mouse. If you need more days just change the column H with the last column that you want to take.
I assume that with all this information you can also keep track of your monthly statics easily. I suggest you to create a different sheet for each month.
I hope that my answer was useful, let me know if you have any doubt.

Answer 2

George, I agree with #fullfine, your data structure does not seem ideal for data analysis. And it doesn't seem that efficient for data entry either, with the sideways scrolling (at least on my screen).
But I recognise that you might not want to change it, perhaps having specific reasons for that layout, and having invested time in it. So I offer this formula as an alternative, which basically pulls the needed cells from your existing sheet, and comes up with the totals you'll need.
=QUERY(QUERY({B7:D9;G7:I9;L7:N9;Q7:S9;V7:X9;AA7:AC9;AF7:AH9;
B20:D22;G20:I22;L20:N22;Q20:S22;V20:X22;AA20:AC22;AF20:AH22;
B33:D35;G33:I35;L33:N35;Q33:S35;V33:X35;AA33:AC35;AF33:AH35;
B46:D48;G46:I48;L46:N48;Q46:S48;V46:X48;AA46:AC48;AF46:AH48;
B59:D61;G59:I61;L59:N61},
"select Col1, Col2, Col3*Col2 where Col1 <>'' order by Col1 label Col3*Col2 '' ",0),
"select Col1, sum(Col2), sum(Col3) group by Col1 label sum(Col2) '', sum(Col3) '' ",0)
The same formula can be used for each month, since it always totals all 31 days, even if the month has fewer days.
For your Rune table in the Statistics sheet, you only need the firsts two columns, so you could delete the "sum(Col3)" from the last select statement.
For your smaller financial table, you would take the sum of the Col3 produced by the above formula, ie. the total value of all the runes used. A similar formula would be used to collect the count of the wax produced, its value, and the profit/loss for each day. This would let you complete the financial table.
If you do decide to go with this approach, and want any help with completing the tables, or the formulas, please share your sheet so "anyone can edit it", to make it easier for me to assist you.