Alright, let's work through 21375837 times 47845807 step by step
21375837 × 47845807 = 47845807 × (21375837)
+ 47845807 × 7 that results in 334920649
+ 47845807 × 30 giving us 1435374210
+ 47845807 × 800 producing 38276645600
+ 47845807 × 5000 that equals 239229035000
+ 47845807 × 70000 giving us 3349206490000
+ 47845807 × 300000 giving us 14353742100000
+ 47845807 × 1000000 that results in 47845807000000
+ 47845807 × 20000000 giving us 956916140000000

= 1022744171565459
