We're going to solve 6903 multiplied by 2509
6903 × 2509 = 2509 × (6903)
+ 2509 × 3 which equals 7527
+ 2509 × 00 that is equal 0
+ 2509 × 900 that equals 2258100
+ 2509 × 6000 giving us 15054000

= 17319627
