No problem, we've got 9878 and 1578 to multiply
9878 × 1578 = 1578 × (9878)
+ 1578 × 8 that results in 12624
+ 1578 × 70 that is equal 110460
+ 1578 × 800 which equals 1262400
+ 1578 × 9000 producing 14202000

= 15587484
