There are 3 red balls and 2 yellow balls in a box, what is the probability of touching the red ball
在一个盒子中有3个红球，2个黄球，摸到红球的可能性是多少
<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>