Answer
3160 cubic yards
Work Step by Step
To find the number of cubic yards of dirt delivered, we find the number of cubic yards per dump truck load and multiply by the number of loads delivered, which is 237. However, we are first asked to estimate. Rounding to easy whole numbers to multiply:
$$ 15 \cdot 240 \\ =3600 \ cubic \ yards$$
Exactly, the value is:
$$ = 13\frac{1}{3} \cdot 237 \\ \frac{40}{3} \times 237 \\ 3160 \ cubic \ yards$$