A row of trees is planted on one side of a canal, and every two trees are 5 meters apart. Two people, A and B, start from both ends of the canal at the same time and walk toward each other. When they meet, A walks from the first tree to the 14th tree. B walks 15 meters longer than A. How long is this canal?
一条水渠的一侧栽了一排树，每两棵树相隔5米．甲乙两人同时分别从水渠的两端出发相向而行，相遇时甲从出发的第1棵走到第14棵处，乙比甲多走了15米，这条水渠长多少米？
<gadget id="calculator">14 - 1</gadget>
<output>13</output>

<gadget id="calculator">5 * 13</gadget>
<output>65</output>

<gadget id="calculator">65 + 15</gadget>
<output>80</output>

<gadget id="calculator">65 + 80</gadget>
<output>145</output>

<result>145</result>