No problem, we've got 5985 and 1428 to multiply
5985 × 1428 = 1428 × (5985)
+ 1428 × 5 what gives us 7140
+ 1428 × 80 which equals 114240
+ 1428 × 900 resulting in 1285200
+ 1428 × 5000 producing 7140000

= 8546580
