Alright, let's work through 72071742 times 19857350 step by step
72071742 × 19857350 = 19857350 × (72071742)
+ 19857350 × 2 yielding 39714700
+ 19857350 × 40 producing 794294000
+ 19857350 × 700 producing 13900145000
+ 19857350 × 1000 giving us 19857350000
+ 19857350 × 70000 resulting in 1390014500000
+ 19857350 × 000000 that results in 0
+ 19857350 × 2000000 yielding 39714700000000
+ 19857350 × 70000000 producing 1390014500000000

= 1431153806003700
