On October 1st, the National Day, a total of 40 potted flowers were placed on both sides of the school road, and the distance between two adjacent potted flowers was 5 meters. How many meters is this school road long?
10月1日国庆节，在校道两边共摆放了40盆花，每相邻两盆花之间相隔5米．这条校道长多少米？
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">20 - 1</gadget>
<output>19</output>

<gadget id="calculator">19 * 5</gadget>
<output>95</output>

<result>95</result>