What is the concentration of salt water after dissolving 40 grams of salt in 460 grams of water?
将40克盐溶解在460克水中后，盐水的浓度是多少．
<gadget id="calculator">40 + 460</gadget>
<output>500</output>

<gadget id="calculator">40 / 500</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(2/25) * 1</gadget>
<output>2/25 = around 0.08</output>

<result>2/25 = around 0.08</result>