Alright, let's work through 15171907 times 80096812 step by step
15171907 × 80096812 = 80096812 × (15171907)
+ 80096812 × 7 producing 560677684
+ 80096812 × 00 yielding 0
+ 80096812 × 900 that results in 72087130800
+ 80096812 × 1000 what gives us 80096812000
+ 80096812 × 70000 which equals 5606776840000
+ 80096812 × 100000 what gives us 8009681200000
+ 80096812 × 5000000 which equals 400484060000000
+ 80096812 × 10000000 which equals 800968120000000

= 1215221382660484
