The original price of Mickey's schoolbag is 90 yuan, and it will be sold at a 20% discount during the New Year's Day. How much is the current price of Mickey's schoolbag?
米奇书包原价90元，元旦期间按八折销售，米奇书包现价多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">90 * (4/5)</gadget>
<output>72</output>

<result>72</result>