Chewbacca and Number

#1


I am not able to pass all the test cases in this question. Why?

#2

It is given that “The decimal representation of the final number shouldn’t start with a zero.”
Consider a case:
999000

Expected o/p
900000

Your o/p
000000

#3

https://ide.codingblocks.com/s/207984 Still 1 test case is not working

#4

Consider input:
81

Your Output:
81

Expected Output:
11