No problem, we've got 6840 and 4666 to multiply
6840 × 4666 = 4666 × (6840)
+ 4666 × 0 that is equal 0
+ 4666 × 40 producing 186640
+ 4666 × 800 producing 3732800
+ 4666 × 6000 resulting in 27996000

= 31915440
