Alright, let's work through 5885 times 1640 step by step
5885 × 1640 = 1640 × (5885)
+ 1640 × 5 what gives us 8200
+ 1640 × 80 what gives us 131200
+ 1640 × 800 what gives us 1312000
+ 1640 × 5000 yielding 8200000

= 9651400
