We're going to solve 1686 multiplied by 3943
1686 × 3943 = 3943 × (1686)
+ 3943 × 6 giving us 23658
+ 3943 × 80 what gives us 315440
+ 3943 × 600 giving us 2365800
+ 3943 × 1000 that is equal 3943000

= 6647898
