What is the salt content of 20 grams of salt dissolved in 60 grams of water
20克盐溶解在60克水中，含盐率是多少
<gadget id="calculator">20 + 60</gadget>
<output>80</output>

<gadget id="calculator">20 / 80</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">(1/4) * 1</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>