The price of navel oranges this year is 10% cheaper than last year. If the price this year is n yuan per kilogram, how much is the price last year per kilogram?
今年脐橙的价格比去年便宜了10%，如果今年的价格是每千克n元，那么去年的价格每千克就是多少元？
<gadget id="calculator">10 / 9</gadget>
<output>10/9 = around 1.111111</output>

<result>10/9 = around 1.111111</result>