4個數x3 =5個數

This represents the multipliaction of a 4-figure nomber by 3.
＊＊＊＊
Ｘ　　　３
－－－－－－
　＊＊＊＊＊
The whole calculation uses each of the digits 0-9 once and once only.
The 4-figure number contains consecutive numbers,which aer not in order.
The third digit is the sum of two of the consecutive numbers.
The first,third and fifth figures of the 5-digit product are three consecutive numbers ,again not in order.
The second and fourth digits are also consecutive numbers.

咁果９個＊等於乜野？　ｐｌｚ　ｈｅｌｐ～