Aunt Li bought a skirt in the 20% off area of the store. The original price was 40 yuan, and she bought a dress in the 30% off area.
李阿姨到商店的八折区买了一条裙子，已知原价是40元，又到七折区买了一件衣服，已知原价是35元，这样，李阿姨共花了多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">40 * (4/5)</gadget>
<output>32</output>

<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">35 * (7/10)</gadget>
<output>49/2 = around 24.5</output>

<gadget id="calculator">32 + (49/2)</gadget>
<output>113/2 = around 56.5</output>

<result>113/2 = around 56.5</result>