No problem, we've got 4710 and 6403 to multiply
4710 × 6403 = 6403 × (4710)
+ 6403 × 0 what gives us 0
+ 6403 × 10 which equals 64030
+ 6403 × 700 which equals 4482100
+ 6403 × 4000 what gives us 25612000

= 30158130
