Among the 200 numbered cards marked 1 to 200, if one is randomly selected, what is the probability that the number is a multiple of 3?
标有1到200的200张数字卡片里，任意抽取1张，号码是3的倍数的可能性是多少．
<gadget id="calculator">66 / 200</gadget>
<output>33/100 = around 0.33</output>

<result>33/100 = around 0.33</result>