Add 305 to 483 in base 8, assuming 483 is a typo for 473.

Here are the solutions to the questions:

1. We usually add using base 10. Add 305 to 483 in base 8.
Assumption: The number 483 is a typo and should be 473, as 8 is not a valid digit in base 8. We will add $305_8$ and $473_8$.