No problem, we've got 2135 and 4218 to multiply
2135 × 4218 = 4218 × (2135)
+ 4218 × 5 that is equal 21090
+ 4218 × 30 yielding 126540
+ 4218 × 100 resulting in 421800
+ 4218 × 2000 producing 8436000

= 9005430
