No problem, we've got 5623 and 4180 to multiply
5623 × 4180 = 4180 × (5623)
+ 4180 × 3 what gives us 12540
+ 4180 × 20 giving us 83600
+ 4180 × 600 producing 2508000
+ 4180 × 5000 giving us 20900000

= 23504140
