A bag contains 3 red balls, 2 basketballs, 4 yellow balls, 2 white balls, and 1 green ball. If you try to draw a ball, what is the probability of drawing a red ball?
一个袋子里装有3个红球，2个篮球，4个黄球，2个白球，一个绿球，如果你去摸出一个球，摸出红球的可能性是多少
<gadget id="calculator">3 + 2 + 4 + 2 + 1</gadget>
<output>12</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>