heyy people of maths help forum i'm facing troubles of my own solving this question

a manufacture makes hi-fi systems and sells it to the wholesaler for 15% + cost of making , the wholesaler then sells it to the retailer at price + 20%, then the retailer sells to ME at $1470 including 30% of it is profit for the retailer.

find the cost of making the hi-fi system whopss forgot to add that sorry.