No problem, we've got 2423 and 5437 to multiply
2423 × 5437 = 5437 × (2423)
+ 5437 × 3 what gives us 16311
+ 5437 × 20 what gives us 108740
+ 5437 × 400 what gives us 2174800
+ 5437 × 2000 that equals 10874000

= 13173851
