Alright, let's work through 8644 times 9055 step by step
8644 × 9055 = 9055 × (8644)
+ 9055 × 4 which equals 36220
+ 9055 × 40 giving us 362200
+ 9055 × 600 what gives us 5433000
+ 9055 × 8000 that equals 72440000

= 78271420
