At a landfill site, a hole in the shape of a rectangular prism is to be dug out. The area of the rectangular cross-section measures $\left(5y+8\right)$(5`y`+8) square metres and the volume of the hole is to be $5y^2+3y-8$5`y`2+3`y`−8 cubic metres such that $\left(5y+8\right)\times\text{depth }=5y^2+3y-8$(5`y`+8)×depth =5`y`2+3`y`−8. Find the expression for the depth of the hole