question: How many more screens did the movie play on in its second week than its first?
#1 return the  movie 
#2 return screens played on of #1 
#3 return #2 in  its second week 
#4 return #2 in  its first week 
#5 return number of  #3 
#6 return number of  #4 
#7 return the  difference of #5 and  #6