Slove the equation. Check your solution 2/5 + m = 5/6

Here is what I did but I don’t know what’s the answer and if I did it right

Tim knows the volume and base area of a wooden chest that is in the shape of a rectangular prism. if the volume is 524 cubic unit and the base area is 15 square unit, what is the height of the chest? 124 unit 1124 units 112 unit 1112 units