Trying to set up a workbook that will find hourly wage

Whats up guys? I am trying to set this up to work out, and I am already having problems. Here is the data that I just started with:

-----(A)---------(B)----------------------(C)--------------------(D)----------------(E)
Time in --- Time Out ---- (Time out - time in)*24 ---- Tips ------ Tips/column C

5:26 --------- 11:28 -------------- 6.033333333 ---------- $63 --------- $10.44198895
5:25 --------- 10:45 -------------- 5.333333333 ---------- $64 --------- $12

From my own calculation, these are both wrong, they are both off by cents. I double checked and I cannot find out what is wrong, but I am pretty sure the error is in the time calculation. If anyone could help that would be great. Thank you.