No problem, we've got 9331 and 1440 to multiply
9331 × 1440 = 1440 × (9331)
+ 1440 × 1 what gives us 1440
+ 1440 × 30 yielding 43200
+ 1440 × 300 yielding 432000
+ 1440 × 9000 that equals 12960000

= 13436640
