A pile of steel pipes is stacked together. There are 3 steel pipes in the top layer and 1 steel pipe in the bottom layer. The bottom layer has 10 steel pipes. How many steel pipes are there in this pile?
一堆钢管堆在一起，最上层有3根下面一层都比上一层多1根，最下面一层是10根，这堆钢管共有多少根？
<gadget id="calculator">3 + 10</gadget>
<output>13</output>

<gadget id="calculator">10 - 3</gadget>
<output>7</output>

<gadget id="calculator">7 + 1</gadget>
<output>8</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">13 * 4</gadget>
<output>52</output>

<result>52</result>