Alright, let's work through 9923 times 2180 step by step
9923 × 2180 = 2180 × (9923)
+ 2180 × 3 which equals 6540
+ 2180 × 20 that results in 43600
+ 2180 × 900 resulting in 1962000
+ 2180 × 9000 giving us 19620000

= 21632140
