Put 5 grams of salt in 25 grams of water, what is the mass of salt in the mass of salt water?
把5克盐放入25克水中，盐的质量占盐水质量的多少
<gadget id="calculator">5 + 25</gadget>
<output>30</output>

<gadget id="calculator">5 / 30</gadget>
<output>1/6 = around 0.166667</output>

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