Put 5 grams of salt in 20 grams of water, what is the amount of salt in salt water?
把5克盐放入20克水中，盐是盐水的多少．
<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">5 / 25</gadget>
<output>1/5 = around 0.2</output>

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