There are 301 electric poles buried along the side of the road, and the distance between every two adjacent poles is 50 meters. Later, they were all refitted, and only 201 were buried. Find the distance between every two adjacent bars after modification.
沿公路一旁埋电线杆301根，每相邻的两根的间距是50米．后来全部改装，只埋了201根．求改装后每相邻两根的间距．
<gadget id="calculator">301 - 1</gadget>
<output>300</output>

<gadget id="calculator">300 * 50</gadget>
<output>15_000</output>

<gadget id="calculator">201 - 1</gadget>
<output>200</output>

<gadget id="calculator">15_000 / 200</gadget>
<output>75</output>

<result>75</result>