certain brand of TV is on sale, and the price is reduced by 5%. On this basis, the mall returns 2% of the selling price in cash. Buying a TV of this brand at this time is equivalent to reducing the price by what percentage?
某品牌电视机进行促销活动，降价5%．在此基础上，商场又返还售价2%的现金．此时买这个品牌的电视机，相当于降价百分之多少？
<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">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">1 - (1/50)</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">1 * (19/20) * (49/50)</gadget>
<output>931/1_000 = around 0.931</output>

<gadget id="calculator">1 - (931/1_000)</gadget>
<output>69/1_000 = around 0.069</output>

<gadget id="calculator">(69/1_000) / 1</gadget>
<output>69/1_000 = around 0.069</output>

<result>69/1_000 = around 0.069</result>