A cuboid box is filled with 3 red balls, 2 yellow balls, and 1 white ball, all of which are the same except for the color. If you touch any one, what is the probability of getting a yellow ball?
一个长方体盒子里装着除颜色外其余均相同的3个红球、2个黄球、1个白球，任意摸一个，摸到黄球的可能性是多少
<gadget id="calculator">3 + 2 + 1</gadget>
<output>6</output>

<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>