Counting number of zeros between two values

Hello,

I have a file where I am looking to amortise rent payments across weeks between rent payments. To do that, I need to count the number of "0" cells between two rent payments, and divide the rent value by that amount. For example in the attached document, the formula would find the first $660, and divide that by three (c:e), then it would find the second 660, divide that by 3 as well (f:h), the third 660, divide that by 4 (i:l) etc..

A few other points, some months rent are missed so the number of "0" between each rent payment won't be the same. Rent payments aren't always the same.

Cheers,
B