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

Example Input: Problem: in a certain country 1 / 5 of 8 = 4 . assuming the same proportion , what would be the value of 1 / 4 of 16 ?
Example Output: 10

Example Input: Problem: two cycles are standing side - by - side . one cycle , which is 2.5 feets tall , casts a shadow that is 5 feets long . the other cycle is 2 feets tall . compute , in feets , the length of the shadow that the shorter cycle casts .
Example Output: 4

Example Input: Problem: 10 ^ ( 600 ) ã · 10 ^ ( 580 ) = ?
Example Output:
10 ^ 20