Alright, let's work through 1793 times 3623 step by step
1793 × 3623 = 3623 × (1793)
+ 3623 × 3 that is equal 10869
+ 3623 × 90 that is equal 326070
+ 3623 × 700 producing 2536100
+ 3623 × 1000 that equals 3623000

= 6496039
