x*y=800
(x*2)*(y*3)=
(x*4)*(y*2)=
(x*2)*(y*3)=XY*6=800*6=4800
(x*4)*(y*2)=XY*8=800*8=6400
(x*2)*(y*3)=6x*y=6*800=4800
(x*4)*(y*2)=8*xy=6400
(x*2)*(y*3)=4800
(x*4)*(y*2)=6400