Put 25 grams of salt into 100 grams of water to make brine. What is the salt content of the brine? There are 200 grams of such brine, how many grams of salt are there?
把25克盐放进100克水里制成盐水，制成的这种盐水，含盐量是百分之几？有200克这样的盐水，里面含盐多少克．
<gadget id="calculator">100 + 25</gadget>
<output>125</output>

<gadget id="calculator">25 / 125</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">(1/5) * 1</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">200 * (1/5)</gadget>
<output>40</output>

<result>40</result>