No problem, we've got 4639 and 5156 to multiply
4639 × 5156 = 5156 × (4639)
+ 5156 × 9 resulting in 46404
+ 5156 × 30 what gives us 154680
+ 5156 × 600 that results in 3093600
+ 5156 × 4000 that is equal 20624000

= 23918684
