You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

the ice rink has 85 pairs of skates to rent . 18 people rented skates when the ice rink opened . 25 more people rented skates during the first hour . how many pairs of skates are left ?
42

shelby had 92 pieces of candy . she gave 4 pieces each to 9 friends . how many pieces of candy does shelby have left ?
56

a car dealer sold 14 cars on the first day 16 cars on the second day and 27 cars on the third day . how many cars did the car dealer sell on the 3 days ?
57