Answer
$$ 50,139,000,000$$
Work Step by Step
We are asked to find an estimate and an exact value. To do this, we round each number until the problem is easy to solve in our head for the estimate. We then use the calculator to find the exact number. Doing this, we find:
$$ 300\times 200,000,000 = 60,000,000,000$$
The exact number is:
$$ 270 \times 185,700,000 \\ 50,139,000,000$$
