How many four-digit numbers greater than 2000 can be formed with the four numbers 1, 2, 3, and 4 and the hundreds digit is not 3 without repeating numbers.
用1、2、3、4这四个数字可组成多少个比2000大且百位数字不是3的无重复数字的四位数．
<gadget id="calculator">3 * 3 * 2 * 1</gadget>
<output>18</output>

<gadget id="calculator">2 * 2 * 1</gadget>
<output>4</output>

<gadget id="calculator">18 - 4</gadget>
<output>14</output>

<result>14</result>