There are 30 pencils in the cloth bag, including 20 red pencils, 7 green pencils, and 3 yellow pencils. What is the probability of getting a red pencil by touching any one?
布袋里有30枝铅笔，其中红色铅笔20枝，绿色铅笔7枝，黄色铅笔3枝．任意摸一枝，摸出红色铅笔的可能性是多少．
<gadget id="calculator">20 / 30</gadget>
<output>2/3 = around 0.666667</output>

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