We're going to solve 2105 multiplied by 1681
2105 × 1681 = 1681 × (2105)
+ 1681 × 5 producing 8405
+ 1681 × 00 producing 0
+ 1681 × 100 producing 168100
+ 1681 × 2000 that results in 3362000

= 3538505
