type a dollar sign $ in front of the variable you don't want to change.
eg. instead of =G6/D6*A3, you should enter =G6/D6*A$3. the thing you don't want to change is the row number. the column is always the same by default. the formula just moves down.
There is no way to have a value in one cell put a formula in another cell. However, you can put a formula in a cell that will change, based on the value of another cell. If you put the formula =A1 in cell B1, B1 will display the value of whatever you place in cell A1.
It contains relative cell references.
if you move or copy the formula to another cell, the cells referred formula will changed. Excel adjusts the cell references relative to the new cell in which the formula is pasted. this is called relative referencing.
The formula bar.
relative
To refer to another cell on another sheet, you precede the cell with the sheet name and an exclamation mark. So if you were on Sheet2 and wanted to refer to cell C6 on Sheet3 and add it to cell B7 on Sheet1 the formula would be: =Sheet3!C6 + Sheet1!B7
first
If you move a formula, as opposed to copying it, cell references will stay the same.
In Excel an equation can be a formula. All formulas in Excel must start with the equals sign. That is what tells Excel it is a formula.
formula
Put the 125000 into one cell, say cell A2. Put 11.5% into another cell, say cell B2. Then in another cell you could have this formula: =A2*B2 That is the proper way to do it, but you could do it lots of other ways.
If the formula is something like AVERAGE, SUM, etc., then it will copy it to another cell. However, when using the sizing handle after just entering the formula alone, Excel will automatically fill in the answer. The formula is copied along with it, though. However, if the formula is in reference to the content of another cell, this will not happen. The formula changes if the formula uses the content of another cell. To keep it exactly the same to copy it down, you have to make the cell number in the formula an absolute value so it will not change.