Alright, let's work through 21184168 times 53944433 step by step
21184168 × 53944433 = 53944433 × (21184168)
+ 53944433 × 8 giving us 431555464
+ 53944433 × 60 yielding 3236665980
+ 53944433 × 100 yielding 5394443300
+ 53944433 × 4000 that is equal 215777732000
+ 53944433 × 80000 that results in 4315554640000
+ 53944433 × 100000 giving us 5394443300000
+ 53944433 × 1000000 that is equal 53944433000000
+ 53944433 × 20000000 which equals 1078888660000000

= 1142767931336744
