The gardener planted trees along one side of the road (both ends) at intervals of 6 meters, and a total of 10 trees were planted. How many meters is the distance from the first tree to the last tree?
园林工人沿公路一侧植树(两端都植)，每隔6米种一棵，一共种了10棵．从第一棵到最后一棵的距离有多少米？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<result>54</result>