Alright, let's work through 9823 times 670 step by step
9823 × 670 = 670 × (9823)
+ 670 × 3 which equals 2010
+ 670 × 20 resulting in 13400
+ 670 × 800 what gives us 536000
+ 670 × 9000 producing 6030000

= 6581410
