How many fewer Egyptian army men were there estimated by modern historians than originally estimated?
return the  Egyptian army ;return men of #1 ;return #2 estimated  by modern historians ;return #2 originally estimated  ;return number of  #3 ;return number of  #4 ;return difference of #6 and  #5
['select', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']