No problem, we've got 6900 and 2684 to multiply
6900 × 2684 = 2684 × (6900)
+ 2684 × 0 producing 0
+ 2684 × 00 what gives us 0
+ 2684 × 900 producing 2415600
+ 2684 × 6000 giving us 16104000

= 18519600
