In a pile of steel pipes, there are 10 steel pipes in the top layer and 26 steel pipes in the bottom layer, and there is always one more steel pipe in the lower layer than the upper layer. How many steel pipes are there in this pile?
一堆钢管，最上面一层有10根，最底层有26根，而且下一层总比上一层多1根，这堆钢管一共有多少根？
<gadget id="calculator">26 + 10</gadget>
<output>36</output>

<gadget id="calculator">26 - 10</gadget>
<output>16</output>

<gadget id="calculator">16 + 1</gadget>
<output>17</output>

<gadget id="calculator">17 / 2</gadget>
<output>17/2 = around 8.5</output>

<gadget id="calculator">36 * (17/2)</gadget>
<output>306</output>

<result>306</result>