What is $(58 + 37) \bmod 9$?

Explanation

1. 01

   Reduce each number first: $58 \bmod 9 = 4$ and $37 \bmod 9 = 1$.

2. 02

   $(4 + 1) \bmod 9 = 5$. Check: $95 = 9 \times 10 + 5$.