There are 37 telegraph poles beside the road. In the past, every two poles were 50 meters apart, but now they are now 60 meters apart. Except for the two ends that do not move, how many of them do not move in the middle?
路一旁有37根电线杆，原来每两根相距50米，现改成每两根相距60米，除两端不移动外，中间有几根不移？
<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>