No problem, we've got 4640 and 9135 to multiply
4640 × 9135 = 9135 × (4640)
+ 9135 × 0 which equals 0
+ 9135 × 40 resulting in 365400
+ 9135 × 600 yielding 5481000
+ 9135 × 4000 producing 36540000

= 42386400
