A pile of cement pipes has 12 layers, and the top layer has 3 pipes. In order to make the pile more stable, 1 pipe will be added in each layer, and the bottom layer has 14 pipes. How many cement pipes are there in this pile?
一堆水泥管有12层，最上面一层有3根，为了堆放得更稳当，以后每层依次增加1根，最下面一层有14根，这堆水泥管有多少根．
<gadget id="calculator">3 + 14</gadget>
<output>17</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">17 * 6</gadget>
<output>102</output>

<result>102</result>