Alright, let's work through 6721244 times 28421753 step by step
6721244 × 28421753 = 28421753 × (6721244)
+ 28421753 × 4 that is equal 113687012
+ 28421753 × 40 that results in 1136870120
+ 28421753 × 200 yielding 5684350600
+ 28421753 × 1000 what gives us 28421753000
+ 28421753 × 20000 that is equal 568435060000
+ 28421753 × 700000 producing 19895227100000
+ 28421753 × 6000000 resulting in 170530518000000

= 191029536820732
