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

Input: Consider Input: Problem: meena wrote all the numbers from 1 to 29,999 inclusive . how many digits did she write in total ?

Output: 138,889


Input: Consider Input: Problem: the marks obtained by vijay and amith are in the ratio 8 : 5 and those obtained by amith and abhishek in the ratio of 3 : 2 . the marks obtained by vijay and abhishek are in the ratio of ?

Output: 12 : 5


Input: Consider Input: Problem: what is the 10 digit to the right of the decimal point , in the decimal expansion of ( 1 / 2 ) ^ 10 ?


Output: