400+7000÷50

To solve the expression \( 400 + 7000 \div 50 \), you should follow the order of operations (often remembered by the acronym PEMDAS/BODMAS):

1. Divide \( 7000 \div 50 \): \[ 7000 \div 50 = 140 \]

2. Add the result to \( 400 \): \[ 400 + 140 = 540 \]

So, \( 400 + 7000 \div 50 = 540 \).