178:6*6-7+267478

To solve the expression \( 178:6 \times 6 - 7 + 267478 \), we will follow the order of operations (PEMDAS/BODMAS):

1. Handle the division first: \[ 178 \div 6 \approx 29.6667 \]

2. Now multiply the result by 6: \[ 29.6667 \times 6 = 178 \]

3. Now substitute back into the expression: \[ 178 - 7 + 267478 \]

4. Perform the subtraction: \[ 178 - 7 = 171 \]

5. Finally, add \( 171 \) to \( 267478 \): \[ 171 + 267478 = 267649 \]

So, the final result is: \[ \boxed{267649} \]