150*5*6*7

To calculate \( 150 \times 5 \times 6 \times 7 \), you can do it step by step:

1. First, multiply \( 150 \times 5 = 750 \).
2. Next, multiply \( 750 \times 6 = 4500 \).
3. Finally, multiply \( 4500 \times 7 = 31500 \).

Therefore, \( 150 \times 5 \times 6 \times 7 = 31500 \).