After pouring 40 grams of salt water from a 100-gram salt water bottle with a concentration of 8%, fill the cup with water, pour out 60 grams of salt water after stirring, and then fill it up with water. What is the concentration of the salt water at this time?
从浓度为8%的100克盐水瓶中倒出40克盐水后，再向杯中加满水，搅拌后再倒出60克盐水，然后再用清水加满，这时盐水的浓度是多少？
<gadget id="calculator">100 - 60</gadget>
<output>40</output>

<gadget id="calculator">100 - 40</gadget>
<output>60</output>

<gadget id="calculator">8 / 100</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">60 * (2/25)</gadget>
<output>24/5 = around 4.8</output>

<gadget id="calculator">(24/5) / 100</gadget>
<output>6/125 = around 0.048</output>

<gadget id="calculator">40 * (6/125)</gadget>
<output>48/25 = around 1.92</output>

<gadget id="calculator">(48/25) / 100</gadget>
<output>12/625 = around 0.0192</output>

<result>12/625 = around 0.0192</result>