No problem, we've got 5391 and 2373 to multiply
5391 × 2373 = 2373 × (5391)
+ 2373 × 1 resulting in 2373
+ 2373 × 90 what gives us 213570
+ 2373 × 300 giving us 711900
+ 2373 × 5000 which equals 11865000

= 12792843
