The bakery is on promotion, all bread is 20% off, and after 8:00 pm there is another 20% off. Xiao Ming went to buy bread at 8:30 pm and paid a total of 30.72 yuan. What is the original price of these breads?
面包店促销，面包一律打8折，晚上八点以后再打8折，小明晚上8点半去买面包，共付了30.72元，这些面包的原价是多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">30.72 / (4/5) / (4/5)</gadget>
<output>48</output>

<result>48</result>