The original price of a piece of clothing is 200 yuan, and after a 30% discount (that is, 70% of the original price), it is sold with a 20% discount on this basis. How much can you save by buying such a piece of clothing?
一件衣服原价200元，先打七折(即原价的70%)后，在此基础上又打八折出售，买这样一件衣服可以少花多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">200 * (7/10) * (4/5)</gadget>
<output>112</output>

<gadget id="calculator">200 - 112</gadget>
<output>88</output>

<result>88</result>