The task is to generate the correct answer for a given math problem.

Ex Input:
Problem: a worker is paid a regular rate of rs . 10 for completing a survey . the worker completes 50 surveys per week . for any survey involving the use of her cellphone , she is paid at a rate of that is 30 % higher than her regular rate . if she completed 35 surveys involving the use of her cellphone , how much did she get that week ?

Ex Output:
605


Ex Input:
Problem: 475.124 x 15.98 ÷ 8.001 + 33.33 = ?

Ex Output:
983.578


Ex Input:
Problem: a cistern which could be filled in 8 hours takes one hour more to be filled owing to a leak in its bottom . if the cistern is full in what time will the leak empty it ?

Ex Output:

40 hr