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

Ex Input:
Problem: if a = 105 and a ^ 3 = 21 25 45 z , what is the value of z ?

Ex Output:
49

Ex Input:
Problem: how many liters of a 40 % iodine solution need to be mixed with 35 liters of a 20 % iodine solution to create a 32 % iodine solution ?

Ex Output:
102

Ex Input:
Problem: a shopkeeper gave an additional 20 per cent concession on the reduced price after giving 30 per cent standard concession on an article . if arun bought that article for 1120 , what was the original price ?

Ex Output:
2000