No problem, we've got 3504 and 5989 to multiply
3504 × 5989 = 5989 × (3504)
+ 5989 × 4 that is equal 23956
+ 5989 × 00 yielding 0
+ 5989 × 500 yielding 2994500
+ 5989 × 3000 which equals 17967000

= 20985456
