question: How many yards of differential were there between Darren McFadden's rushing touchdown yards and his receiving touchdown yards?
#1 return Darren McFadden 
#2 return rushing touchdown of #1 
#3 return receiving touchdown of #1 
#4 return yards  of #2 
#5 return yards  of #3 
#6 return sum of #4 
#7 return sum of #4 
#8 return difference of #6 and  #7