Alright, let's work through 21435724 times 66893883 step by step
21435724 × 66893883 = 66893883 × (21435724)
+ 66893883 × 4 that results in 267575532
+ 66893883 × 20 yielding 1337877660
+ 66893883 × 700 producing 46825718100
+ 66893883 × 5000 what gives us 334469415000
+ 66893883 × 30000 producing 2006816490000
+ 66893883 × 400000 giving us 26757553200000
+ 66893883 × 1000000 yielding 66893883000000
+ 66893883 × 20000000 that results in 1337877660000000

= 1433918813276292
