A magazine, published one month, costs 12 yuan each. If you book for one year in a row, you can get a 5% discount. This year, Xiaoqiang's family subscribed to such a magazine. How much does he need to pay in total for the whole year?
一种杂志，每月出版一本，每本需要12元．如果连续订一年，可以优惠5%．今年小强家订了一份这样的杂志，全年一共需要付多少元？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">12 * 12 * (19/20)</gadget>
<output>684/5 = around 136.8</output>

<result>684/5 = around 136.8</result>