On the road from the school to the Children's Palace, there are 37 telegraph poles in total. In the past, the distance between every two poles was 50 meters, but now the distance between every two poles has to be changed to 60 meters, except for the two poles at both ends that do not need to be moved In addition, how many roots are not moving in the middle?
从学校到少年宫的这段公路上，一共有37根电线杆，原来每两根电线杆之间相距50米，现在要改成每两根之间相距60米，除两端两根不需要移动外，中途还有多少根不比移动？
<gadget id="calculator">37 - 1</gadget>
<output>36</output>

<gadget id="calculator">50 * 36</gadget>
<output>1_800</output>

<gadget id="calculator">2 * 2 * 3 * 5 * 5</gadget>
<output>300</output>

<gadget id="calculator">1_800 / 300</gadget>
<output>6</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<result>5</result>