excel formula

To thumbsup2, thank you very much for your time and effort. God bless…
We are a employee of one company here. We want a cash advance of 5 thousand pesos and it is to be deducted to our leave credits. The problem is how cwn we compute a exact number of days to be deducted in our leave credits. Here are some information:

In column a are a list of names. In column B are list of salary which are given, in column C have a constant factor of 0.4715 which is also given, in column D have a given value of 5 thousand pesos. In column E are number of days to be solve for a 5 thousand pesos value. Thank you very much for your help. God bless