No problem, we've got 6687 and 3939 to multiply
6687 × 3939 = 3939 × (6687)
+ 3939 × 7 that is equal 27573
+ 3939 × 80 yielding 315120
+ 3939 × 600 producing 2363400
+ 3939 × 6000 giving us 23634000

= 26340093
