There are 4 white balls, 3 yellow balls and 1 red ball (the size and shape of the balls are the same) in a bag, one of them is drawn randomly, what is the probability of drawing a yellow ball
袋子里有4个白球、3个黄球和1个红球(球的大小和形状一样)，从中任意摸出1个，摸到黄球的可能性是多少
<gadget id="calculator">4 + 3 + 1</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

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