TASK DEFINITION: You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.
PROBLEM: Melanie grew 139 turnips . Benny grew 113 turnips . How many turnips did they grow in all ?

SOLUTION: 252

PROBLEM: A construction company bought 5.91 tons of gravel and 8.11 tons of sand . How many tons of material did the company buy in all ?

SOLUTION: 14.02

PROBLEM: The school is planning a field trip . There are 28 students and 7 seats on each school bus . How many buses are needed to take the trip ?

SOLUTION:
4