question_text: How many more dollars did the V-22 Total cost of ownership per hour in 2013 compared to Sikorsky CH-53E Super Stallion cost per flight hour in 2007?
decomposition: return Total cost  of ownership per hour  in  2013 of  the V-22 ;return Total cost  per flight hour  in  2007 of the Sikorsky CH-53E Super Stallion ;return difference in  dollars of #1 and  #2