Alright, let's work through 6223 times 6398 step by step
6223 × 6398 = 6398 × (6223)
+ 6398 × 3 giving us 19194
+ 6398 × 20 what gives us 127960
+ 6398 × 200 what gives us 1279600
+ 6398 × 6000 producing 38388000

= 39814754
