Alright, let's work through 3819 times 5492 step by step
3819 × 5492 = 5492 × (3819)
+ 5492 × 9 yielding 49428
+ 5492 × 10 that is equal 54920
+ 5492 × 800 that is equal 4393600
+ 5492 × 3000 that results in 16476000

= 20973948
