Alright, let's work through 1338 times 2638 step by step
1338 × 2638 = 2638 × (1338)
+ 2638 × 8 that is equal 21104
+ 2638 × 30 that results in 79140
+ 2638 × 300 that is equal 791400
+ 2638 × 1000 what gives us 2638000

= 3529644
