No problem, we've got 5163 and 3911 to multiply
5163 × 3911 = 3911 × (5163)
+ 3911 × 3 which equals 11733
+ 3911 × 60 yielding 234660
+ 3911 × 100 giving us 391100
+ 3911 × 5000 resulting in 19555000

= 20192493
