To calculate \( 40 \times 47 \times 273 \), you can break it down step-by-step.
First, calculate \( 40 \times 47 \):
\[ 40 \times 47 = 1880 \]
Next, multiply this result by 273:
\[ 1880 \times 273 = 512040 \]
Therefore, \( 40 \times 47 \times 273 = 512040 \).