No problem, we've got 9663 and 4140 to multiply
9663 × 4140 = 4140 × (9663)
+ 4140 × 3 resulting in 12420
+ 4140 × 60 that results in 248400
+ 4140 × 600 yielding 2484000
+ 4140 × 9000 resulting in 37260000

= 40004820
