A cell reference is the address of the cell like A1 or B20 or C45. A cell value is what is actually in the cell. So in cell A1 you could have 23, in B20 you could have 190 and in C45 you could have 3461.
Relative cell references and some mixed cell references will change when a formula is copied.
relative cell address
Cell references are the addresses of cells and values are what are contained in the cell. So A3 could be a cell reference and the number 42 could be a value in the cell.
References to cells in other workbooks are called links. The A1 reference style The difference between relative and absolute references The 3-D reference style The R1C1 reference style
It formats the values.
It contains relative cell references.
In order to do formulas that use values in cells, you need to be able to refer to those cells in the formulas. That is what a cell reference does. You can then create formulas that can be copied quickly and be used for any values that may appear in the cells. As much as possible cell references, rather than values, should be used in formulas.
It would be a formula that includes absolute references in cells. When such a formula is copied, those cell references will not change. An absolute cell reference includes cell references with two dollar signs in them, like: $A$2.
There are several functions of Excel that do not work with 3D formulas. These include cell references and range formula.
You can do this using relative reference.
A formula.
You would first need to know how the fat in milk is calculated and have a formula for it. You would need to know what values are needed to do it. Then you would need to get the values you need and enter them into cells in the spreadsheet. Using these cell references to build your formula, you could do the calculation.