No problem, we've got 3719 and 1720 to multiply
3719 × 1720 = 1720 × (3719)
+ 1720 × 9 which equals 15480
+ 1720 × 10 that results in 17200
+ 1720 × 700 producing 1204000
+ 1720 × 3000 that equals 5160000

= 6396680
