The price of imported cars of a certain brand has been reduced by 5% in the first half of this year compared to last year, and in the second half of the year by 3% compared with the first half of the year. What percentage is the total price reduction this year compared to last year?
某品牌的进口车，今年上半年比去年降价5%，下半年又比上半年降价3%，请问今年比去年共降价百分之几？
<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">3 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">1 - (3/100)</gadget>
<output>97/100 = around 0.97</output>

<gadget id="calculator">1 * (19/20) * (97/100)</gadget>
<output>1_843/2_000 = around 0.9215</output>

<gadget id="calculator">1 - (1_843/2_000)</gadget>
<output>157/2_000 = around 0.0785</output>

<result>157/2_000 = around 0.0785</result>