No problem, we've got 3303 and 6135 to multiply
3303 × 6135 = 6135 × (3303)
+ 6135 × 3 producing 18405
+ 6135 × 00 resulting in 0
+ 6135 × 300 producing 1840500
+ 6135 × 3000 that equals 18405000

= 20263905
