The county water supply company purchased a batch of water pipes, with 9 pipes on the top floor and 14 pipes on the bottom floor, with a difference of 1 pipe between two adjacent floors. How many water pipes did the water company purchase in total?
县自来水公司购进一批水管，最上层9根，最下层14根，每相邻的两层相差1根．自来水公司一共购进多少根自来水管？
<gadget id="calculator">9 + 14</gadget>
<output>23</output>

<gadget id="calculator">14 - 9</gadget>
<output>5</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">23 * 3</gadget>
<output>69</output>

<result>69</result>