Alright, let's work through 81373709 times 34541658 step by step
81373709 × 34541658 = 34541658 × (81373709)
+ 34541658 × 9 that results in 310874922
+ 34541658 × 00 resulting in 0
+ 34541658 × 700 resulting in 24179160600
+ 34541658 × 3000 that equals 103624974000
+ 34541658 × 70000 that results in 2417916060000
+ 34541658 × 300000 that equals 10362497400000
+ 34541658 × 1000000 that results in 34541658000000
+ 34541658 × 80000000 which equals 2763332640000000

= 2810782826469522
