In the entrance ceremony of the sports meeting, Happy Elementary School participates in a parade performance. There are 60 people participating in a row of 4 people. The distance between the front and back rows is 1 meter. What is the total length of the queue in meters?
运动会入场式，快乐小学参加队列表演，有60人参加，每4人一行，前后两行间隔1米，这个队列全长多少米．
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">15 - 1</gadget>
<output>14</output>

<gadget id="calculator">14 * 1</gadget>
<output>14</output>

<result>14</result>