Alright, let's work through 73072841 times 20542526 step by step
73072841 × 20542526 = 20542526 × (73072841)
+ 20542526 × 1 producing 20542526
+ 20542526 × 40 which equals 821701040
+ 20542526 × 800 that results in 16434020800
+ 20542526 × 2000 that results in 41085052000
+ 20542526 × 70000 producing 1437976820000
+ 20542526 × 000000 yielding 0
+ 20542526 × 3000000 that results in 61627578000000
+ 20542526 × 70000000 giving us 1437976820000000

= 1501100736136366
