How many more field goals did Nedney need to equal Rackers' total number of field goals?
return Nedney ;return field goals of #1 ;return number of  #2 ;return Rackers ;return field goals of #4 ;return number of  #5 ;return difference of #6 and  #3
['select', 'project', 'aggregate', 'select', 'project', 'aggregate', 'arithmetic']