User blog comment:MachineGunSuper/My challenge to type a googolplex on a computer (copy/paste)/@comment-1605058-20171230210656/@comment-11227630-20180119033216

In this sense, to show the n-th decimal digit (from left or from right) of 10^10^100 is easy. However, to show the n-th decimal digit (from left or from right) of 9^10^100 is not so easy.