Calculation or estimating the total number of employee hours I have available

Hello, I am builiding a Labor breakdown by employee that will show me how many hours I can afford to pay them based on the given labor dollars that I have on hand currently.

Here are the two areas where I am drawing a blank:

What formulas do I use that will divide up my labor bank by each employee's hourly rate.

Although I show a monthly breakdown I would like a formula to determine how far out my money will take me.

Here is a sample spreadsheet that I've attached.