No problem, we've got 6990 and 3664 to multiply
6990 × 3664 = 3664 × (6990)
+ 3664 × 0 that results in 0
+ 3664 × 90 which equals 329760
+ 3664 × 900 producing 3297600
+ 3664 × 6000 what gives us 21984000

= 25611360
