Alright, let's work through 89661918 times 71462713 step by step
89661918 × 71462713 = 71462713 × (89661918)
+ 71462713 × 8 what gives us 571701704
+ 71462713 × 10 that equals 714627130
+ 71462713 × 900 giving us 64316441700
+ 71462713 × 1000 that results in 71462713000
+ 71462713 × 60000 yielding 4287762780000
+ 71462713 × 600000 that equals 42877627800000
+ 71462713 × 9000000 yielding 643164417000000
+ 71462713 × 80000000 which equals 5717017040000000

= 6407483913063534
