Alright, let's work through 63044640 times 66891984 step by step
63044640 × 66891984 = 66891984 × (63044640)
+ 66891984 × 0 giving us 0
+ 66891984 × 40 that results in 2675679360
+ 66891984 × 600 which equals 40135190400
+ 66891984 × 4000 producing 267567936000
+ 66891984 × 40000 what gives us 2675679360000
+ 66891984 × 000000 that results in 0
+ 66891984 × 3000000 which equals 200675952000000
+ 66891984 × 60000000 giving us 4013519040000000

= 4217181050165760
