Alright, let's work through 89420119 times 13412635 step by step
89420119 × 13412635 = 13412635 × (89420119)
+ 13412635 × 9 producing 120713715
+ 13412635 × 10 resulting in 134126350
+ 13412635 × 100 producing 1341263500
+ 13412635 × 0000 producing 0
+ 13412635 × 20000 that is equal 268252700000
+ 13412635 × 400000 what gives us 5365054000000
+ 13412635 × 9000000 what gives us 120713715000000
+ 13412635 × 80000000 yielding 1073010800000000

= 1199359417803565
