Let's calculate 3529 x 6720
3529 × 6720 = 6720 × (3529)
+ 6720 × 9 which equals 60480
+ 6720 × 20 resulting in 134400
+ 6720 × 500 that results in 3360000
+ 6720 × 3000 producing 20160000

= 23714880
