Alright, let's work through 63205614 times 84103379 step by step
63205614 × 84103379 = 84103379 × (63205614)
+ 84103379 × 4 what gives us 336413516
+ 84103379 × 10 giving us 841033790
+ 84103379 × 600 what gives us 50462027400
+ 84103379 × 5000 that is equal 420516895000
+ 84103379 × 00000 what gives us 0
+ 84103379 × 200000 that results in 16820675800000
+ 84103379 × 3000000 which equals 252310137000000
+ 84103379 × 60000000 producing 5046202740000000

= 5315805709169706
