What is the salt content of 10 grams of salt in 90 grams of water?
10克盐放入90克水中，含盐率是多少．
<gadget id="calculator">10 + 90</gadget>
<output>100</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

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

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

<result>1/10 = around 0.1</result>