There are 3 red balls and 5 white balls in a box, each ball is the same size, if you draw a ball randomly, what is the probability of drawing a red ball
箱子中装有3个红球和5个白球，每个球的大小一样，从中任意摸出一个球，摸到红球的可能性是多少
<gadget id="calculator">5 + 3</gadget>
<output>8</output>

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

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