( 5^7+5^6+5^5)÷5^5+9^7÷3^10 =
5^5×(5^2 + 5 + 1) ÷ 5^5 + (3^2)^7 ÷ 3^10 =
5^5 × 31 ÷ 5^5 + 3^14 ÷ 3^10 =
31 + 3^4 =
31 + 81 =
112
