Alright, let's work through 71732555 times 15997308 step by step
71732555 × 15997308 = 15997308 × (71732555)
+ 15997308 × 5 yielding 79986540
+ 15997308 × 50 yielding 799865400
+ 15997308 × 500 what gives us 7998654000
+ 15997308 × 2000 resulting in 31994616000
+ 15997308 × 30000 that results in 479919240000
+ 15997308 × 700000 yielding 11198115600000
+ 15997308 × 1000000 yielding 15997308000000
+ 15997308 × 70000000 producing 1119811560000000

= 1147527775961940
