No problem, we've got 3507 and 3503 to multiply
3507 × 3503 = 3503 × (3507)
+ 3503 × 7 what gives us 24521
+ 3503 × 00 that results in 0
+ 3503 × 500 what gives us 1751500
+ 3503 × 3000 that results in 10509000

= 12285021
