No problem, we've got 1644 and 3464 to multiply
1644 × 3464 = 3464 × (1644)
+ 3464 × 4 that equals 13856
+ 3464 × 40 that is equal 138560
+ 3464 × 600 that equals 2078400
+ 3464 × 1000 producing 3464000

= 5694816
