Alright, let's work through 3823 times 170 step by step
3823 × 170 = 170 × (3823)
+ 170 × 3 giving us 510
+ 170 × 20 what gives us 3400
+ 170 × 800 that is equal 136000
+ 170 × 3000 producing 510000

= 649910
