Hacker robot Ekupai is trying to hack a supercomputer. He needs a cheat code **X** to hack this computer where **X** is a non-negative integer. He doesn’t know how to find **X**. But he somehow managed to find an integer **N** and he believes that **N** is equal to **6X**. Unfortunately some (possibly zero) digits of **N** are missing.

This is a companion discussion topic for the original entry at https://toph.co/p/ekupai