if u've a large nmbr to multiplide & one of them iz even ,u can easily subdivide to get the ans e.g 32 x 125 is the same as 16 x 250 is the same as 8 x 500 is the same as 4 x 1000
if u've a large nmbr to mix & one of them iz even ,u can easily subdivide to get the ans e.g 32 x 125 is the same as 16 x 250 is the same as 8 x 500 is the same as 4 x 1000