Use three cards of 0, 3, and 5 to form a three-digit number arbitrarily. What is the probability that the three-digit number is a multiple of 5?
用0、3、5三张卡片任意组成一个三位数，这个三位数是5的倍数的可能性是多少．
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>