Huanhuan made two cups of honey water. The first cup used 25ml of honey and 200ml of water. According to the sweetness of the first cup, there was 500ml of water in the second cup. How much honey should be added to the second cup?
欢欢调制了两杯蜂蜜水，第一杯用了25毫升蜂蜜和200毫升水，照第一杯的甜度，第二杯中有水500毫升，第二杯应加多少毫升蜂蜜？
<gadget id="calculator">25 / 200</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 500</gadget>
<output>125/2 = around 62.5</output>

<result>125/2 = around 62.5</result>