Alright, let's work through 2443 times 8945 step by step
2443 × 8945 = 8945 × (2443)
+ 8945 × 3 what gives us 26835
+ 8945 × 40 that results in 357800
+ 8945 × 400 resulting in 3578000
+ 8945 × 2000 giving us 17890000

= 21852635
