question: How many more yards Jerry Rice have than the leading rusher and second-leading rusher combined?
#1 return Jerry Rice 
#2 return yards of #1 
#3 return rushers 
#4 return yards of #3 
#5 return the  highest of #4 
#6 return #4 besides  #5 
#7 return the  highest of #6 
#8 return sum of #5 and  #7 
#9 return the  difference of #2 and  #8