A trench is to be dug 2500` long. The base of the trench is 3` wide. The depth is 9`. Sides are sloped at 1:1 for the top 4`. A Hoe excavates 27.5 CY per hour. What are the total number hours required to excavate the trench?

A trench is to be dug 2500` long. The base of the trench is 3` wide. The depth is 9`. Sides are sloped at 1:1 for the top 4`. A Hoe excavates 27.5 CY per hour. What are the total number hours required to excavate the trench?