Alright, let's work through 4185 times 2638 step by step
4185 × 2638 = 2638 × (4185)
+ 2638 × 5 producing 13190
+ 2638 × 80 that is equal 211040
+ 2638 × 100 producing 263800
+ 2638 × 4000 what gives us 10552000

= 11040030
