No problem, we've got 1503 and 8220 to multiply
1503 × 8220 = 8220 × (1503)
+ 8220 × 3 producing 24660
+ 8220 × 00 what gives us 0
+ 8220 × 500 that equals 4110000
+ 8220 × 1000 producing 8220000

= 12354660
