There are 4 red balls, 3 white balls, and 1 blue ball in the cloth bag. If one ball is drawn from it, what is the probability of taking out the white ball?
布袋里有4只红球，3只白球、1只蓝球，现从中摸出1只，拿出白球的可能性是多少．
<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>