b)

To solve , first multiply the numerators: . Then, multiply the denominators: . This gives us . Simplifying this fraction, we notice that both the numerator and the denominator can be divided by 450. This yields as the final answer!

When handling fractions like this, remember to simplify whenever possible. Look for common factors in the numerator and denominator; dividing both parts by the GCD (greatest common divisor) streamlines your calculations and keeps corrections quick and easy. Mistakes often happen when rushing through multiplication without double-checking, so take a moment to review your work!