Alright, let's work through 1643 times 1793 step by step
1643 × 1793 = 1793 × (1643)
+ 1793 × 3 resulting in 5379
+ 1793 × 40 that equals 71720
+ 1793 × 600 that results in 1075800
+ 1793 × 1000 giving us 1793000

= 2945899
