Trees are to be planted on both sides of a new road, one tree is planted every 5 meters, and a total of 202 trees are planted from the beginning to the end. How long is the road in meters?
在一条新马路两边都要种树，每隔5米种一棵树，从头到尾共种202棵，这条马路长多少米？
<gadget id="calculator">202 / 2</gadget>
<output>101</output>

<gadget id="calculator">101 - 1</gadget>
<output>100</output>

<gadget id="calculator">100 * 5</gadget>
<output>500</output>

<result>500</result>