Dissolve 10 grams of salt in 40 grams of water, what is the mass of salt equal to the mass of salt water
把10克盐溶解在40克水中，盐的质量是盐水质量的多少
<gadget id="calculator">10 + 40</gadget>
<output>50</output>

<gadget id="calculator">10 / 50</gadget>
<output>1/5 = around 0.2</output>

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