How do you make something the brainliest?

There is a button that you can click

Step-by-step explanation:

You ask a question. Once you get one or two answers you can press a button and mark one of the answers brainliest.

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540