What is the salt content when 30 grams of water is added to 50 grams of 10% salt water?
含盐10%的盐水50克中加入30克水后，含盐多少．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

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

<gadget id="calculator">50 + 30</gadget>
<output>80</output>

<gadget id="calculator">5 / 80</gadget>
<output>1/16 = around 0.0625</output>

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

<gadget id="calculator">(1/16) * 1</gadget>
<output>1/16 = around 0.0625</output>

<result>1/16 = around 0.0625</result>