A glass of sugar water is 50g, and the mass ratio of sugar to water is 1:9. If 50g of water is added, how much sugar accounts for the sugar water at this time?
一杯糖水50g，糖和水的质量比是1：9，如果再加入50g水，这时糖占糖水的多少．
<gadget id="calculator">1 + 9</gadget>
<output>10</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">50 * (1/10)</gadget>
<output>5</output>

<gadget id="calculator">50 + 50</gadget>
<output>100</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(1/20) * 1</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>