Alright, let's work through 3781 times 5505 step by step
3781 × 5505 = 5505 × (3781)
+ 5505 × 1 that results in 5505
+ 5505 × 80 resulting in 440400
+ 5505 × 700 giving us 3853500
+ 5505 × 3000 that results in 16515000

= 20814405
