There are 3 balls in a bag, red, yellow and white. If you touch one ball at a time, then the probability of touching a red ball is ((())/(())); if you touch 60 times, it is estimated how many times you touch a red ball.
袋子中有红色、黄色、白色共3个球．如果一次摸一个球，那么摸到红球的可能性是((())/(()))；如果摸60次，估计大约有多少次摸到红球．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<result>20</result>