We're going to solve 6443 multiplied by 1904
6443 × 1904 = 1904 × (6443)
+ 1904 × 3 what gives us 5712
+ 1904 × 40 which equals 76160
+ 1904 × 400 resulting in 761600
+ 1904 × 6000 what gives us 11424000

= 12267472
