I am Super confused of what needs to be the output. Can someone explain me with an clear example?

Hi Redmega,

Don't you think testing the solution with numbers like 85241263, is bit of an overkill for new programmers like me. My solution works fine till earlier 8 digit numbers, but number close to 10 crore is too much. Atleast it should be mentioned in the description, so that we can concentrate on the optimization of the program while writing the code itself. If this limitation is placed this should an higher level kata rather than an 7 kyu.