Put 9 grams of salt and 50 grams of water in a cup, what percentage of the salt water in the salt water?
一只杯子中放入9克盐，50克水，盐水中盐占盐水的几分之几？
<gadget id="calculator">50 + 9</gadget>
<output>59</output>

<gadget id="calculator">9 / 59</gadget>
<output>9/59 = around 0.152542</output>

<result>9/59 = around 0.152542</result>