There are four cards 3, 0, 4, and 8. If a three-digit number is randomly placed, what is the probability that it is an even number?
有四张卡片3、0、4、8，任意摆一个三位数，是偶数的可能性是多少．
<gadget id="calculator">3 * 2 * 2</gadget>
<output>12</output>

<gadget id="calculator">4 * 3 * 2</gadget>
<output>24</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">24 - 6</gadget>
<output>18</output>

<gadget id="calculator">12 / 18</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>