HELP! on a price grid with using square footage

I am trying to make a grid with calculating the width and the height. Then add the $ per square foot to be in the grid. Need to able to copy the formula in incremental cells. if that makes sense. =Sum(A2*B1/144*60) That seems to work for one cell But need to be able to copy across all cells. Help would be greatly appreciated.




30 32 34 36 38 40
20 486
22
24
26
28
30
32
34
36