Alright, let's work through 18091482 times 3980360 step by step
18091482 × 3980360 = 3980360 × (18091482)
+ 3980360 × 2 what gives us 7960720
+ 3980360 × 80 that results in 318428800
+ 3980360 × 400 producing 1592144000
+ 3980360 × 1000 resulting in 3980360000
+ 3980360 × 90000 giving us 358232400000
+ 3980360 × 000000 yielding 0
+ 3980360 × 8000000 what gives us 31842880000000
+ 3980360 × 10000000 producing 39803600000000

= 72010611293520
