Alright, let's work through 3180 times 6833 step by step
3180 × 6833 = 6833 × (3180)
+ 6833 × 0 resulting in 0
+ 6833 × 80 that is equal 546640
+ 6833 × 100 that equals 683300
+ 6833 × 3000 which equals 20499000

= 21728940
