The clock strikes 3 times at 3 o'clock, and it takes 3 seconds in total. Ask how many seconds it takes to type 11 at 11 am.
时钟3点打3下，一共需要3秒钟．问上午11点打11下需要多少秒钟．
<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">10 * (3/2)</gadget>
<output>15</output>

<result>15</result>