Alright, let's work through 21807634 times 38463047 step by step
21807634 × 38463047 = 38463047 × (21807634)
+ 38463047 × 4 producing 153852188
+ 38463047 × 30 that equals 1153891410
+ 38463047 × 600 that results in 23077828200
+ 38463047 × 7000 yielding 269241329000
+ 38463047 × 00000 yielding 0
+ 38463047 × 800000 yielding 30770437600000
+ 38463047 × 1000000 resulting in 38463047000000
+ 38463047 × 20000000 that results in 769260940000000

= 838788051500798
