Alright, let's work through 3543 times 5287 step by step
3543 × 5287 = 5287 × (3543)
+ 5287 × 3 what gives us 15861
+ 5287 × 40 that is equal 211480
+ 5287 × 500 that results in 2643500
+ 5287 × 3000 resulting in 15861000

= 18731841
