To find the area of the sandbox, you can use the formula \( A = l \times w \).
Substituting the values for length (l = 40.3 inches) and width (w = 25.6 inches), we get:
\[ A = 40.3 \times 25.6 \]
Now, simplifying the equation:
\[ A = 1034.48 \]
The area of the sandbox is \( 1034.48 \) square inches (in²).
So, the complete filled statement would be:
"Write the equation and substitute 40.3 for l and 25.6 for w. Now, simplify the equation by multiplying 40.3 and 25.6. The area of the sandbox is 1034.48 in²."