We're going to solve 3899 multiplied by 3523
3899 × 3523 = 3523 × (3899)
+ 3523 × 9 resulting in 31707
+ 3523 × 90 that is equal 317070
+ 3523 × 800 which equals 2818400
+ 3523 × 3000 that results in 10569000

= 13736177
