There are 73 trees in a row, and the distance between every two trees is 3.65 meters. How long is the total length of this row of trees from the first tree to the last tree?
有一行树73棵，每两棵间隔3.65米，这行树从第一棵到最一棵共有多少米长？
<gadget id="calculator">73 - 1</gadget>
<output>72</output>

<gadget id="calculator">72 * 3.65</gadget>
<output>262.8</output>

<result>262.8</result>