No problem, we've got 4085 and 4185 to multiply
4085 × 4185 = 4185 × (4085)
+ 4185 × 5 which equals 20925
+ 4185 × 80 giving us 334800
+ 4185 × 000 producing 0
+ 4185 × 4000 what gives us 16740000

= 17095725
