If you subscribe to "Jinling Evening News" for only one month, each copy will cost 30 yuan. If you subscribe for one year in a row, you can get a discount (1/10). How much does it cost to subscribe to such a newspaper for a whole year?
《金陵晚报》如果只订一个月，每份需要30元．如果连续订一年，可以优惠(1/10)，全年订一份这样的报纸，一共需要多少元？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">30 * (9/10) * 12</gadget>
<output>324</output>

<result>324</result>