No problem, we've got 4221 and 3837 to multiply
4221 × 3837 = 3837 × (4221)
+ 3837 × 1 producing 3837
+ 3837 × 20 yielding 76740
+ 3837 × 200 what gives us 767400
+ 3837 × 4000 that is equal 15348000

= 16195977
