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

[Q]: Problem: find out the c . i on rs . 5000 at 4 % p . a . compound half - yearly for 1 1 / 2 years ?
[A]: 306.04


[Q]: Problem: a car salesman earns a base salary of $ 1000 per month plus a commission of $ 200 for each car he sells . if the car salesman earned $ 2000 in march , how many cars does he need to sell in april in order to double his march earnings ?
[A]: 15


[Q]: Problem: what is the least number that should be added to 1054 , so the sum of the number is divisible by 23 ?
[A]:
4