If the price of a car was reduced by 10% last year and 5% this year, how much is the current price less than the price before the first price reduction?
一辆汽车去年降价10%，今年又降价5%，现价比第一次降价前的价格少百分之几？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<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">(9/10) * (19/20)</gadget>
<output>171/200 = around 0.855</output>

<gadget id="calculator">1 - (171/200)</gadget>
<output>29/200 = around 0.145</output>

<result>29/200 = around 0.145</result>