Alright, let's work through 84489583 times 48647021 step by step
84489583 × 48647021 = 48647021 × (84489583)
+ 48647021 × 3 that equals 145941063
+ 48647021 × 80 resulting in 3891761680
+ 48647021 × 500 resulting in 24323510500
+ 48647021 × 9000 what gives us 437823189000
+ 48647021 × 80000 that equals 3891761680000
+ 48647021 × 400000 which equals 19458808400000
+ 48647021 × 4000000 resulting in 194588084000000
+ 48647021 × 80000000 that is equal 3891761680000000

= 4110166518482243
