Alright, let's work through 84404174 times 9124939 step by step
84404174 × 9124939 = 9124939 × (84404174)
+ 9124939 × 4 that results in 36499756
+ 9124939 × 70 that is equal 638745730
+ 9124939 × 100 which equals 912493900
+ 9124939 × 4000 which equals 36499756000
+ 9124939 × 00000 that equals 0
+ 9124939 × 400000 that results in 3649975600000
+ 9124939 × 4000000 resulting in 36499756000000
+ 9124939 × 80000000 giving us 729995120000000

= 770182939095386
