There are 2 red balls and 3 yellow balls in a box, they are identical except for their color, what is the probability of drawing a yellow ball from the box?
盒子里有2个红球和3个黄球，他们除颜色外完全相同，从中摸出一个球，摸出黄球的可能性是多少．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>