Mark wants to paint a mural. He has 1 1/7 gallons of yellow paint, 1 1/8 gallons of green paint, and 7/8a gallon of blue paint. Mark plans to use 3/4 a 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.