No problem, we've got 6404 and 1122 to multiply
6404 × 1122 = 1122 × (6404)
+ 1122 × 4 which equals 4488
+ 1122 × 00 what gives us 0
+ 1122 × 400 that is equal 448800
+ 1122 × 6000 that equals 6732000

= 7185288
