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

[Q]: Problem: a circular ground whose diameter is 70 metres , has a 2.8 metre - broad garden around it . what is the area of the garden in square metres ?
[A]: 640.64


[Q]: Problem: what is the dividend . divisor 13 , the quotient is 17 and the remainder is 1
[A]: 222


[Q]: Problem: 1 / 2,16 , 4,15 , 3,56 , _ ?
[A]:
28 / 3