No problem, we've got 4435 and 6344 to multiply
4435 × 6344 = 6344 × (4435)
+ 6344 × 5 that equals 31720
+ 6344 × 30 giving us 190320
+ 6344 × 400 what gives us 2537600
+ 6344 × 4000 that is equal 25376000

= 28135640
