Use 50 grams of white sugar to prepare known sugar water with a ratio of sugar and water of 1:19. What is the sugar content of this sugar water?
用50克白糖按糖和水的比1：19配制已知糖水，这种糖水的含糖率是多少．
<gadget id="calculator">1 + 19</gadget>
<output>20</output>

<gadget id="calculator">1 / 20</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>