well, from 08:00 to 12:15 that's hmmm 12 - 8 = 4 plus the 15 minutes, that's 4 hrs and 15 minutes.
then you go to lunch and have the sandwich with italian salad for 45minutes.
come back at 13:00 or 1pm, work till 17:15 or 5:15pm, so from 1 to 5:15 that's just 4 hrs and 15 minutes.
so you worked for 8 hours and 15 minutes plus 15 minutes that's 30 minutes or half-hour, so you worked a total of 8.5 hours, at $12.50 a pop, that's just 12.5*8.5 = 106.25, so 106 bucks with a quarter.