283000-234*40+23600

Let's calculate the expression step by step:

1. Calculate \( 234 \times 40 \): \[ 234 \times 40 = 9360 \]

2. Now substitute this value back into the expression: \[ 283000 - 9360 + 23600 \]

3. First, perform the subtraction: \[ 283000 - 9360 = 273640 \]

4. Finally, add \( 23600 \): \[ 273640 + 23600 = 297240 \]

So, the final result is \( 297240 \).