What is the minimum number of flights required for a car with a carrying capacity of 1 2 / 3t to transport a load of 7 1/2 tons?

In order to find out what is the minimum number of flights this machine will need, divide the weight of the entire cargo by the carrying capacity of this machine. To do this, we represent both of these numbers as improper fractions for convenience of calculations:
1 2/3 = 5/3;
7 1/2 = 15/2.
Now, in fact, it remains to divide one into another:
15/2 / 5/3 = 15/2 x 3/5 = 45/10 = 4.5.
Where can we conclude that at least 5 flights will need to be made.
Answer: in order to transfer the specified load to a car with a carrying capacity of 1 2/3 tons, you will need to make at least 5 trips.