No problem, we've got 7873 and 9999 to multiply
7873 × 9999 = 9999 × (7873)
+ 9999 × 3 yielding 29997
+ 9999 × 70 resulting in 699930
+ 9999 × 800 yielding 7999200
+ 9999 × 7000 giving us 69993000

= 78722127
