Alright, let's work through 6609 times 8407 step by step
6609 × 8407 = 8407 × (6609)
+ 8407 × 9 that is equal 75663
+ 8407 × 00 giving us 0
+ 8407 × 600 giving us 5044200
+ 8407 × 6000 yielding 50442000

= 55561863
