No problem, we've got 2105 and 3505 to multiply
2105 × 3505 = 3505 × (2105)
+ 3505 × 5 that results in 17525
+ 3505 × 00 yielding 0
+ 3505 × 100 that is equal 350500
+ 3505 × 2000 that is equal 7010000

= 7378025
