Can you check my answer and see if it’s correct i wanna make sure it’s the right answer if not can you me with this question

Regular price 75$ discount 25%sale price?

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?