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

[Q]: Problem: a salt manufacturing company produced a total of 2000 tonnes of salt in january of a particular year . starting from february its production increased by 100 tonnes every month over the previous months until the end of the year . find its ave 66 rage daily production for that year ?
[A]: 83


[Q]: Problem: a solution of 70 litres contains oil and water in the ratio 9 : x . if 6 litres of water is added to the solution , the ratio becomes 6 : 4 , find the value of x ?
[A]: 


[Q]: Problem: how many integers between 324,805 and 458,705 have tens digit 2 and units digit 3 ?
[A]:
1,349