Alright, let's work through 3798 times 3921 step by step
3798 × 3921 = 3921 × (3798)
+ 3921 × 8 resulting in 31368
+ 3921 × 90 that is equal 352890
+ 3921 × 700 which equals 2744700
+ 3921 × 3000 resulting in 11763000

= 14891958
