Alright, let's work through 72213557 times 51223262 step by step
72213557 × 51223262 = 51223262 × (72213557)
+ 51223262 × 7 that is equal 358562834
+ 51223262 × 50 yielding 2561163100
+ 51223262 × 500 that results in 25611631000
+ 51223262 × 3000 yielding 153669786000
+ 51223262 × 10000 which equals 512232620000
+ 51223262 × 200000 resulting in 10244652400000
+ 51223262 × 2000000 that is equal 102446524000000
+ 51223262 × 70000000 yielding 3585628340000000

= 3699013950162934
