IF MY BUYING ORDER OF 1000 QTY IS IN QUE AND SUPPOSE ORDER IS EXECUTED IN 3 Steps LIKE 300+300+400=1000 SO IS IT 3 TREADS? THAT MEANS 3*20=60 RS BUYING AND SUPPOSE SELLING ORDER IS ALSO EXECUTED IN SAME WAY LIKE 200+200+600=1000 I.E 3*20=60 SO FINALLY 60+60=120+TAXES. IS IT CORRECT?