Alright, let's work through 18045328 times 80451219 step by step
18045328 × 80451219 = 80451219 × (18045328)
+ 80451219 × 8 what gives us 643609752
+ 80451219 × 20 that is equal 1609024380
+ 80451219 × 300 that equals 24135365700
+ 80451219 × 5000 which equals 402256095000
+ 80451219 × 40000 giving us 3218048760000
+ 80451219 × 000000 that is equal 0
+ 80451219 × 8000000 producing 643609752000000
+ 80451219 × 10000000 giving us 804512190000000

= 1451768634854832
