Dissolve 5 grams of salt in 100 grams of water. Salt is water ((())/(())), salt accounts for salt water ((())/(())), and the weight of salt water is the weight of salt Times.
把5克盐溶解在100克水中，盐是水的((())/(()))，盐占盐水的((())/(()))，盐水的重量是盐重量的多少倍．
<gadget id="calculator">100 + 5</gadget>
<output>105</output>

<gadget id="calculator">105 / 5 / 1</gadget>
<output>21</output>

<gadget id="calculator">21 / 1</gadget>
<output>21</output>

<result>21</result>