We're going to solve 3900 multiplied by 1897
3900 × 1897 = 1897 × (3900)
+ 1897 × 0 that results in 0
+ 1897 × 00 which equals 0
+ 1897 × 900 giving us 1707300
+ 1897 × 3000 that is equal 5691000

= 7398300
