Alright, let's work through 50164318 times 12802339 step by step
50164318 × 12802339 = 12802339 × (50164318)
+ 12802339 × 8 that results in 102418712
+ 12802339 × 10 that results in 128023390
+ 12802339 × 300 giving us 3840701700
+ 12802339 × 4000 that is equal 51209356000
+ 12802339 × 60000 resulting in 768140340000
+ 12802339 × 100000 producing 1280233900000
+ 12802339 × 0000000 yielding 0
+ 12802339 × 50000000 which equals 640116950000000

= 642220604739802
