(157 + (800 - 457) 2) ÷ 3 = (157 + 343 2) ÷ 3 = (157 + 686) ÷ 3 = 843 ÷ 3 = 281
Therefore, the result is 281.
(157 + (800 - 457) 2) ÷ 3
= (157 + 343 2) ÷ 3
= (157 + 686) ÷ 3
= 843 ÷ 3
= 281
Therefore, the result is 281.