No problem, we've got 6403 and 3527 to multiply
6403 × 3527 = 3527 × (6403)
+ 3527 × 3 that equals 10581
+ 3527 × 00 that equals 0
+ 3527 × 400 what gives us 1410800
+ 3527 × 6000 that is equal 21162000

= 22583381
