During the "3.15" event, there is a casual children's shoes priced at 64 yuan after a 20% discount, so what is the original price of this casual children's shoes?
在"3.15"活动期间，有一款休闲童鞋打八折后售价为64元，那么这款休闲童鞋原价是多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">64 / (4/5)</gadget>
<output>80</output>

<result>80</result>