Alright, let's work through 71097087 times 72384893 step by step
71097087 × 72384893 = 72384893 × (71097087)
+ 72384893 × 7 that equals 506694251
+ 72384893 × 80 that equals 5790791440
+ 72384893 × 000 what gives us 0
+ 72384893 × 7000 yielding 506694251000
+ 72384893 × 90000 producing 6514640370000
+ 72384893 × 000000 giving us 0
+ 72384893 × 1000000 producing 72384893000000
+ 72384893 × 70000000 that results in 5066942510000000

= 5146355035106691
