(520+130)-400:4

To solve the expression \( (520 + 130) - \frac{400}{4} \), follow these steps:

1. Calculate the sum inside the parentheses: \[ 520 + 130 = 650 \]

2. Calculate the division: \[ \frac{400}{4} = 100 \]

3. Subtract the result of the division from the sum: \[ 650 - 100 = 550 \]

So, the final answer is \( 550 \).