PLEASE HELP I WILL MARK BRAINLIST if it's correct! Mark wants to paint a mural. He has 1 1/5 gallons of yellow paint, 1 1/6 gallons of green paint, and 7/8 gallons of blue paint. Mark plans to use 3/4 gallon of each paint color. How many gallons of paint will he have left after painting the mural? Enter your answer as a simplified fraction.

Mark will have ___? gallon of paint left after painting the mural.

If you guys can explain it really clearly I will mark you brainiest :)
(Note: I can only give you the brainiest when 2 people answered.)