(8094-22848:56)*37-42*309

Let's break down the expression step by step:

1. Calculate \( 22848 \div 56 \): \[ 22848 \div 56 = 408 \]

2. Now substitute that back into the expression: \[ 8094 - 408 \] Calculate \( 8094 - 408 \): \[ 8094 - 408 = 7686 \]

3. Now multiply this result by 37: \[ 7686 \times 37 \] Calculate \( 7686 \times 37 \): \[ 7686 \times 37 = 284382 \]

4. Next, calculate \( 42 \times 309 \): \[ 42 \times 309 = 12978 \]

5. Finally, subtract this from the previous result: \[ 284382 - 12978 \] Calculate \( 284382 - 12978 \): \[ 284382 - 12978 = 271404 \]

Thus, the final result is: \[ \boxed{271404} \]