No problem, we've got 9100 and 6404 to multiply
9100 × 6404 = 6404 × (9100)
+ 6404 × 0 yielding 0
+ 6404 × 00 which equals 0
+ 6404 × 100 that equals 640400
+ 6404 × 9000 that is equal 57636000

= 58276400
