Students in class 5 and 2 are doing exercises. 12 people line up in a row with a distance of 1 meter between them. What is the length of the row in meters?
五2班同学做操，12人排成一列，两人之间相距1米，这一列的长度是多少米．
<gadget id="calculator">12 - 1</gadget>
<output>11</output>

<gadget id="calculator">11 * 1</gadget>
<output>11</output>

<result>11</result>