Alright, let's work through 6645 times 885 step by step
6645 × 885 = 885 × (6645)
+ 885 × 5 that is equal 4425
+ 885 × 40 producing 35400
+ 885 × 600 producing 531000
+ 885 × 6000 yielding 5310000

= 5880825
