There are 3 red balls and 6 yellow balls in a pocket, and one ball is randomly drawn out of it. The probability of getting a red ball is ((())/(())). If you touch 60 times, you will get How many times is the red ball possible.
一个口袋里装有3个红球和6个黄球，从中任意摸出1个球，摸到红球的可能性是((())/(()))，如果摸60次，摸到红球的可能性是多少次．
<gadget id="calculator">3 + 6</gadget>
<output>9</output>

<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">60 * (1/3)</gadget>
<output>20</output>

<result>20</result>