Add 10 grams of salt to 490 grams of water. Find the salinity of the brine.
在490克水中加入10克的盐．求盐水的含盐率．
<gadget id="calculator">490 + 10</gadget>
<output>500</output>

<gadget id="calculator">490 / 500</gadget>
<output>49/50 = around 0.98</output>

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

<gadget id="calculator">(49/50) * 1</gadget>
<output>49/50 = around 0.98</output>

<result>49/50 = around 0.98</result>