6.1 On Children's Day, the bookstore offers a 20% discount on each book. Xiaohong bought a "Children's Encyclopedia" and paid 2.7 yuan less than the original price. What is the current price of this "Children's Encyclopedia"?
6.1儿童节书店按每本定价打八折优惠，小红买了一本《儿童百科全书》，比原价少付2.7元，这本《儿童百科全书》现价多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2.7 / (1/5)</gadget>
<output>13.5</output>

<gadget id="calculator">13.5 * (4/5)</gadget>
<output>10.8</output>

<result>10.8</result>