Dissolve 250 grams of salt in 1 kilogram of water, what is the weight of the salt in the salt water
把250克盐溶于1千克水中，盐占盐水重量的多少
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">250 + 1_000</gadget>
<output>1_250</output>

<gadget id="calculator">250 / 1_250</gadget>
<output>1/5 = around 0.2</output>

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