A schoolbag is priced at 60 yuan after a 20% discount, what is the original price?
一个书包，打8折后售价60元，原价多少．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">60 / (4/5)</gadget>
<output>75</output>

<result>75</result>