I've reviewed some of the answers to this issue in this forum, but they
confuse me. I am a complete rookie with excel. From the help file, i was
instructed to select the cell, go to format/cell/protection, and click hide
cell, etc. I protected the sheet, but the formula was still visible.

First, why doesn't this work?
Second, how do i hide #DIV/0! where the cell formula is =SUM(C13/C4).

thanks.