Hi Tim. I have to make some assumptions to give you a numerical answer.

First assumption: password characters can be any English alphabetic character or any numeric character (no symbols, spaces, etc). So that means there are 26+10 choices for each character.

Second assumption: Your password is as long as it is allowed to be. That means that since 9k7d4112p5o is 11 characters long, then passwords must be at least 1 character and at most 11 characters long.

There are 36 possible one-character passwords.
There are 36² possible two-character passwords.
There are 36³ possible three-character passwords.
and so on.

So the next question is this:
What is 36 + 36² + 36³ + ... + 36¹¹ ?

I won't show you the derivation (you could just use your calculator too), but the sum like this can be simplified to:

So the number of guesses is 36(36¹¹ - 1)/35 which my calculator says is 135 382 323 952 046 196 or about 135 quadrillion. That would take some time.

Cheers,
Steve La Rocque