b \( \frac{200000}{0,008 \cdot 0,01} \)

First, let's simplify the calculation. When you divide 200,000 by the product of 0.008 and 0.01, you first multiply those two decimals together, which equals 0.00008. Then, dividing 200,000 by 0.00008 gives you an impressive result of 2,500,000,000. That's two and a half billion—a big number indeed! Now, if you're solving problems involving such calculations regularly, it can be helpful to check your work by using a calculator or breaking it down into smaller parts. Ensure you keep track of your decimal places, as missing them can lead to incorrect results. It’s a common mistake, but with practice, you’ll become more accurate!