Alright, let's work through 3681 times 5433 step by step
3681 × 5433 = 5433 × (3681)
+ 5433 × 1 giving us 5433
+ 5433 × 80 giving us 434640
+ 5433 × 600 that is equal 3259800
+ 5433 × 3000 giving us 16299000

= 19998873
