No problem, we've got 5679 and 3600 to multiply
5679 × 3600 = 3600 × (5679)
+ 3600 × 9 that results in 32400
+ 3600 × 70 giving us 252000
+ 3600 × 600 that is equal 2160000
+ 3600 × 5000 producing 18000000

= 20444400
