1 box is used every 1.5 days. How many are used in 242 days?

1 box is used every 1.5 days. How many are used in 242 days?

Set up a proportion of boxes to days where b is the number of boxes used for 242 days:
1/1.5 = b/242

To solve this proportion for b, we type it in our search engine and we get:
b = 161.3333