Put 3 yellow ping-pong balls and 5 white ping-pong balls in a schoolbag, let you draw 1 ball at random each time, and the number of times you draw yellow ping-pong balls accounts for approximately the total number of times.
在一个书包里放3只黄乒乓球和5只白乒乓球，让你每次任意摸出1只球，摸出黄乒乓球的次数大约占总次数的多少．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>