No problem, we've got 3879 and 3963 to multiply
3879 × 3963 = 3963 × (3879)
+ 3963 × 9 that is equal 35667
+ 3963 × 70 that results in 277410
+ 3963 × 800 that is equal 3170400
+ 3963 × 3000 that equals 11889000

= 15372477
