No problem, we've got 3221 and 6447 to multiply
3221 × 6447 = 6447 × (3221)
+ 6447 × 1 resulting in 6447
+ 6447 × 20 that is equal 128940
+ 6447 × 200 giving us 1289400
+ 6447 × 3000 yielding 19341000

= 20765787
