question: How many more loses did the Astros have compared to wins in the 1975 season?
#1 return the  Astros 
#2 return loses of #1 
#3 return wins of #1 
#4 return #2 in  the  1975 season 
#5 return #3 in  the  1975 season 
#6 return number of  #4 
#7 return number of  #5 
#8 return the  difference of #6 and  #7