Mom bought (4/5) kilograms of white sugar. The ratio of white sugar to brown sugar is 1:2. How many kilograms of brown sugar are there?
妈妈买了(4/5)千克的白糖，买的白糖与红糖的比是1：2，红糖有多少千克？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(4/5) / (1/2)</gadget>
<output>8/5 = around 1.6</output>

<result>8/5 = around 1.6</result>