Alright, let's work through 71716942 times 42578297 step by step
71716942 × 42578297 = 42578297 × (71716942)
+ 42578297 × 2 what gives us 85156594
+ 42578297 × 40 producing 1703131880
+ 42578297 × 900 which equals 38320467300
+ 42578297 × 6000 yielding 255469782000
+ 42578297 × 10000 what gives us 425782970000
+ 42578297 × 700000 giving us 29804807900000
+ 42578297 × 1000000 that equals 42578297000000
+ 42578297 × 70000000 producing 2980480790000000

= 3053585256407774
