Alright, let's work through 18731963 times 97917521 step by step
18731963 × 97917521 = 97917521 × (18731963)
+ 97917521 × 3 producing 293752563
+ 97917521 × 60 yielding 5875051260
+ 97917521 × 900 that results in 88125768900
+ 97917521 × 1000 what gives us 97917521000
+ 97917521 × 30000 giving us 2937525630000
+ 97917521 × 700000 resulting in 68542264700000
+ 97917521 × 8000000 yielding 783340168000000
+ 97917521 × 10000000 producing 979175210000000

= 1834187380423723
