A1519.[COCI-2013_2014-contest3]#4 PAROVI

The distance between two integers is defined as the sum of the absolute result of subtracting their digits. For example, the distance between the numbers 4561 and 3278 is |4 – 3| + |5 - 2| + |6 - 7| +
|1 - 8| = 1
2. If one of the numbers consists of fewer digits than the other, we fill it with leading zeroes. Therefore, the distance between the numbers 32 and 5678 is |0 - 5| + |0 - 6| + |3 - 7| + |2 -
8| = 2
1.
You are given two integers A and B. Calculate the sum of distances between each pair of numbers belonging in the interval [A, B]!

The first and only line of input contains integers A, B (1 ≤ A ≤ B ≤ 10^50000).

The first and only line of output must contain the required number from the text. Given that the number could be extremely large, output answer modulo 1 000 000 00
7.

In test cases worth 20% of total points, A and B will not exceed 10000.
In test cases worth 40% of total points, A and B will not exceed 10^100.