No problem, we've got 1804 and 3503 to multiply
1804 × 3503 = 3503 × (1804)
+ 3503 × 4 what gives us 14012
+ 3503 × 00 producing 0
+ 3503 × 800 what gives us 2802400
+ 3503 × 1000 yielding 3503000

= 6319412
