Alright, let's work through 68991418 times 72124142 step by step
68991418 × 72124142 = 72124142 × (68991418)
+ 72124142 × 8 resulting in 576993136
+ 72124142 × 10 which equals 721241420
+ 72124142 × 400 what gives us 28849656800
+ 72124142 × 1000 yielding 72124142000
+ 72124142 × 90000 that results in 6491172780000
+ 72124142 × 900000 that results in 64911727800000
+ 72124142 × 8000000 which equals 576993136000000
+ 72124142 × 60000000 giving us 4327448520000000

= 4975946828613356
