peform calculation according to criteria

Hi guys not sure how to do this one

I have a number in C4 which can be any number.

I want to calc the formula (1/cell value) all the way down to (G68) to the total number of columns shown in C4.

For example if C4 = 10 calculate formula from G9 TO G18.

All calculations go in cells H9:H68.

cheers burdo

all cell values start from G9