Alright, let's work through 84417490 times 12920137 step by step
84417490 × 12920137 = 12920137 × (84417490)
+ 12920137 × 0 that is equal 0
+ 12920137 × 90 resulting in 1162812330
+ 12920137 × 400 which equals 5168054800
+ 12920137 × 7000 that is equal 90440959000
+ 12920137 × 10000 what gives us 129201370000
+ 12920137 × 400000 that results in 5168054800000
+ 12920137 × 4000000 resulting in 51680548000000
+ 12920137 × 80000000 that is equal 1033610960000000

= 1090685535996130
