The inside bottom of the tray must be slightly inclined

Job ID: 35152306

Budget: £250 – £750 GBP

need something "simple" 3D designed so it can be printed. I am creating my own prototype and testing it.
I need an inclined tray w10" x L15" x H 4". The inside bottom of the tray must be slightly inclined. At the end of the inclination, the left corner must have a more predominant dent near a 2 1/2" hole in diameter.
If you have more question please contact me.