Madhu is a chemistry honour’s student but she always wanted to learn competitive programming. So, she went to the best institution in the town. They gave her a question as an entrance test to check her skills. You as the best coder of the town need to help Madhu, so that she qualify her test.
A number is called silly number if it consist of number no other than (3, 7). You need to find the total silly number X between K1 and K2.
The first few silly numbers are (3, 7, 33, 37, 73……)
Input
The first line of input contains the only integer T denoting the number of testcases.
Second line contains contains two integers K1 and K2.
Output
Print the total silly number X between K1 and K2.
NOTE: The next silly number of a silly number is number itself
Constraints
1 ≤ T ≤ 105
0 ≤ K1, K2 ≤ 1016
For 4th Test Case their are 6 silly number between 1 and 100
3,7,33,37,73,77
