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

[Q]: Problem: what is the sum of natural numbers between 30 and 100
[A]: 4615


[Q]: Problem: a company pays 12.5 % dividend to its investors . if an investor buys rs . 60 shares and gets 25 % on investment , at what price did the investor buy the shares ?
[A]: 30


[Q]: Problem: how many integers between 1 and 10 ^ 19 are such that the sum of their digits is 2 ?
[A]:
190