A toy remote-controlled car dropped 5% on Children's Day and rose 5% after the holiday. Now this kind of toy remote control car has dropped by a few percent compared to the original?
一种玩具遥控车在儿童节时下降了5%，节日过后又上涨了5%．现在这种玩具遥控车比原来下降了百分之几？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">1 + (1/20)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">1 * (19/20) * (21/20)</gadget>
<output>399/400 = around 0.9975</output>

<gadget id="calculator">1 - (399/400)</gadget>
<output>1/400 = around 0.0025</output>

<result>1/400 = around 0.0025</result>