No problem, we've got 3403 and 5203 to multiply
3403 × 5203 = 5203 × (3403)
+ 5203 × 3 what gives us 15609
+ 5203 × 00 that results in 0
+ 5203 × 400 that equals 2081200
+ 5203 × 3000 that is equal 15609000

= 17705809
