Alright, let's work through 1389 times 8401 step by step
1389 × 8401 = 8401 × (1389)
+ 8401 × 9 producing 75609
+ 8401 × 80 resulting in 672080
+ 8401 × 300 that results in 2520300
+ 8401 × 1000 that is equal 8401000

= 11668989
