No problem, we've got 7812 and 2520 to multiply
7812 × 2520 = 2520 × (7812)
+ 2520 × 2 producing 5040
+ 2520 × 10 resulting in 25200
+ 2520 × 800 that is equal 2016000
+ 2520 × 7000 producing 17640000

= 19686240
