Put 5 kg of salt into 20 kg of water, what is the weight of the salt in the salt water
把5千克盐放入20千克水中，盐的质量占盐水的多少
<gadget id="calculator">5 / 25</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>