Dissolve 2 grams of salt in 200 grams of water, what percentage of the mass of salt is in the salt water?
把2克盐溶解在200克的水里面，盐的质量占盐水的几分之几？
<gadget id="calculator">2 + 200</gadget>
<output>202</output>

<gadget id="calculator">2 / 202</gadget>
<output>1/101 = around 0.009901</output>

<result>1/101 = around 0.009901</result>