We're going to solve 6243 multiplied by 3300
6243 × 3300 = 3300 × (6243)
+ 3300 × 3 what gives us 9900
+ 3300 × 40 that is equal 132000
+ 3300 × 200 what gives us 660000
+ 3300 × 6000 giving us 19800000

= 20601900
