(657+123):3-124

To solve the expression \( (657 + 123) : 3 - 124 \), we follow the order of operations:

1. Addition: \( 657 + 123 = 780 \)

2. Division: \( 780 : 3 = 260 \)

3. Subtraction: \( 260 - 124 = 136 \)

So, the final result is \( 136 \).