Sample:
Row Column A Column B
1 1125 1625 =SUM(B1-A1/A1 = .4444
2 430 430 =SUM(B2-A2/A2 = .0000
3 0 0 =SUM(B3-A3/A3 = #DIV/0'

When copying down first line, the error message appears when blank or zero cells are accessed. What can i do to remedy this problem. Their will always be "0" cells.

First time combining subtraction with division formulas.