Dissolve 4 grams of salt in 24 grams of water, what is the percentage of salt in the salt water
把4克盐溶解在24克水中，盐占盐水的多少
<gadget id="calculator">4 + 24</gadget>
<output>28</output>

<gadget id="calculator">4 / 28</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>