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.

While on vacation , Nancy took 49 pictures at the zoo and 8 at the museum . If she later deleted 38 of the pictures , how many pictures from her vacation did she still have ?
19

A chef needs to cook 13 potatoes . He has already cooked 5 . If each potato takes 6 minutes to cook , how long will it take him to cook the rest ?
48

You deposit 70 dollars in a savings account that pays an annual interest rate of 3 % . How much simple interest would you earn in 2.5 years , in dollars ?

5.25