No problem, we've got 6923 and 7891 to multiply
6923 × 7891 = 7891 × (6923)
+ 7891 × 3 which equals 23673
+ 7891 × 20 giving us 157820
+ 7891 × 900 giving us 7101900
+ 7891 × 6000 producing 47346000

= 54629393
