Alright, let's work through 2161 times 9793 step by step
2161 × 9793 = 9793 × (2161)
+ 9793 × 1 yielding 9793
+ 9793 × 60 which equals 587580
+ 9793 × 100 giving us 979300
+ 9793 × 2000 that equals 19586000

= 21162673
