A newspaper is ordered monthly, each copy is 10 yuan. If you subscribe to a newspaper for the whole year at one time, you can get a 10% discount. How much is the discount for such a newspaper subscription for one year?
一种报纸按月订，每份10元．如果一次性订全年的报纸可优惠10%，这样一份报纸订阅一年共优惠多少元．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">10 * (1/10) * 12</gadget>
<output>12</output>

<result>12</result>