No problem, we've got 4603 and 6686 to multiply
4603 × 6686 = 6686 × (4603)
+ 6686 × 3 what gives us 20058
+ 6686 × 00 resulting in 0
+ 6686 × 600 producing 4011600
+ 6686 × 4000 producing 26744000

= 30775658
