(SOLVED)Hello. Can anyone help me with a formula i need. Here's what I'm doing.

i need the cell to give me the sum of .28 x ? (? being a certain number of minutes) = __________.

Example: job pays $17/hr so the .28 is what $17/hr pays per minute. so if someone works 3 hrs and 40 minutes, i need a formula that would give me what that 40 minutes total is so I can add it to the total hours and come up with a TOTAL pay . Hopefully that makes sense.