We're going to solve 6643 multiplied by 6429
6643 × 6429 = 6429 × (6643)
+ 6429 × 3 what gives us 19287
+ 6429 × 40 yielding 257160
+ 6429 × 600 giving us 3857400
+ 6429 × 6000 that is equal 38574000

= 42707847
