No problem, we've got 6670 and 4285 to multiply
6670 × 4285 = 4285 × (6670)
+ 4285 × 0 what gives us 0
+ 4285 × 70 yielding 299950
+ 4285 × 600 what gives us 2571000
+ 4285 × 6000 what gives us 25710000

= 28580950
