No problem, we've got 3523 and 5391 to multiply
3523 × 5391 = 5391 × (3523)
+ 5391 × 3 that is equal 16173
+ 5391 × 20 resulting in 107820
+ 5391 × 500 giving us 2695500
+ 5391 × 3000 that results in 16173000

= 18992493
