Let's calculate 6681 x 4004
6681 × 4004 = 4004 × (6681)
+ 4004 × 1 resulting in 4004
+ 4004 × 80 what gives us 320320
+ 4004 × 600 that is equal 2402400
+ 4004 × 6000 that is equal 24024000

= 26750724
