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.

Ex Input:
olivia 's dad took her and some friends out to eat for her birthday . if each meal costs 7 dollars and her dad paid for 3 meals how much did he spend ?

Ex Output:
21


Ex Input:
the capacity of a tank is 32 gallons . if a company bought 728 gallons of oil how many tanks are needed to hold all the oil ?

Ex Output:
22.75


Ex Input:
olivia had 7 math problems to complete . she spent about 4 minutes on each problem and then she spent 3 minutes checking her answers . how many minutes did she spend total ?

Ex Output:

31