If you only subscribe to a magazine for one season, each copy will cost 30 yuan. If you subscribe for a consecutive year, you can get a 15% discount. This year, Xiaohua subscribed to this magazine. How much does she have to pay for the whole year?
一种杂志如果只订一个季度，每份需要30元，如果连续订一年可以优惠15%，今年小华订了这种杂志，全年一共要付多少钱？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">30 * 4 * (17/20)</gadget>
<output>102</output>

<result>102</result>