Stationery stores offer discounts during New Year’s Day. Xiaodong saw that the original price of the schoolbag was 40 yuan, but now it is 10% off. What is the current price?
元旦期间文具店打折，小冬看见书包原价40元，现在打九折，现价是多少？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">40 * (9/10)</gadget>
<output>36</output>

<result>36</result>