No problem, we've got 5729 and 2123 to multiply
5729 × 2123 = 2123 × (5729)
+ 2123 × 9 that is equal 19107
+ 2123 × 20 producing 42460
+ 2123 × 700 which equals 1486100
+ 2123 × 5000 what gives us 10615000

= 12162667
