A machine shop produces 50,000 bearings per day. At the end of each month, they review the number of failures for the month. In April, quality management records a total failure of 400 units. For the month of April, this shop worked a total of 20 days. Initial assessment points to 5 potential factors that could have created opportunities for failures. What is the defects per unit (DPU)? What is the defects per opportunities (DPO)? What would be the defects per million opportunities (DPMO)?