Alright, let's work through 81622093 times 89943253 step by step
81622093 × 89943253 = 89943253 × (81622093)
+ 89943253 × 3 yielding 269829759
+ 89943253 × 90 producing 8094892770
+ 89943253 × 000 that is equal 0
+ 89943253 × 2000 that equals 179886506000
+ 89943253 × 20000 that results in 1798865060000
+ 89943253 × 600000 yielding 53965951800000
+ 89943253 × 1000000 producing 89943253000000
+ 89943253 × 80000000 that results in 7195460240000000

= 7341356561088529
