17/8 * 4/5. 7/8 * 3 1/4. 1 2/3 * 1 1/4. 3 3/4 * 2 2/5. 6 2/3 * 3 3/10.

The general procedure is to first convert mixed numbers to improper fractions, then to multiply (cancelling numerators and denominators if possible). Final answers are given both in improper form or as a mixed number, depending on how you are typically required to present the final answer in class.
1 7/8 * 4/5 = 15/8 * 4/5 = 3/2 * 1/1 = 3/2 or 1 1/2
7/8 * 3 1/4 = 7/8 * 13/4 = 91/32 or 2 27/32
1 2/3 * 1 1/4 = 5/3 * 5/4 = 25/12 or 2 1/12
3 3/4 * 2 2/5 = 15/4 * 12/5 = 3/1 * 3/1 = 9
6 2/3 * 3 3/10 = 20/3 * 33/10 = 2/1 * 11/1 = 22

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

It’s hard to understand what you put.. can you show a picture ?