Jack's till has 2 * $100 + 1 * $50 + 5 * $20 + 3 * $10 + 7 * $5 + 27 * $1 bills, or $200 + $50 + $100 + $30 + $35 + $27 = $<<2*100+1*50+5*20+3*10+7*5+27*1=442>>442.
He's going to leave $300 in the till and turn the rest in to the office, so he'll be turning in $442 - $300 = $142.
#### 142