I honestly don’t understand I’m in 7th grade and struggling pls help

Answer this question! 30 points and brainliest! only if you know the answer.

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4