In salt water, salt is (1/5) of water, and salt is of salt water ((())/(())).
在盐水中，盐是水的(1/5)，盐是盐水的((())/(()))．
<gadget id="calculator">1 + 5</gadget>
<output>6</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>