shopping mall sells all clothes at a discount of 20% during the festival, and Dad spent 56 yuan on a shirt. How much is the original price of this shirt?
某商场在节日期间所有衣服一律按八折出售，爸爸买一件衬衣花了56元．这件衬衣原价是多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">56 / (4/5)</gadget>
<output>70</output>

<result>70</result>