There are two bags, both containing red balls and white balls. The probability of drawing a red ball from the first bag is (1/4), and the probability of drawing a red ball from the second bag is (1/3). What is the probability of drawing a white ball from both bags?
有两个袋子，都装着红球和白球．从第一个袋子中摸出红球的概率是(1/4)，从第二个袋子里摸出红球的概率是(1/3)．两个袋子里都摸出白球的概率是多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(3/4) * (2/3)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>