Alright, let's work through 84378354 times 11205763 step by step
84378354 × 11205763 = 11205763 × (84378354)
+ 11205763 × 4 that is equal 44823052
+ 11205763 × 50 what gives us 560288150
+ 11205763 × 300 which equals 3361728900
+ 11205763 × 8000 resulting in 89646104000
+ 11205763 × 70000 that equals 784403410000
+ 11205763 × 300000 producing 3361728900000
+ 11205763 × 4000000 yielding 44823052000000
+ 11205763 × 80000000 producing 896461040000000

= 945523837254102
