We're going to solve 4485 multiplied by 4644
4485 × 4644 = 4644 × (4485)
+ 4644 × 5 yielding 23220
+ 4644 × 80 that is equal 371520
+ 4644 × 400 giving us 1857600
+ 4644 × 4000 that results in 18576000

= 20828340
