Add 50 kg of salt to 450 kg of water. Find the salinity of the brine.
在450千克水中加入50千克的盐．求盐水的含盐率．
<gadget id="calculator">450 + 50</gadget>
<output>500</output>

<gadget id="calculator">50 / 500</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>