There are 36 logs in a pile of wood. From top to bottom, the upper layer has one less than the lower layer, and the top layer has 10 logs. How many logs are there in this pile?
一堆木料，底层有36根，从上往下，上面一层比下面一层少一根，最上层有10根，这堆木料有多少根？
<gadget id="calculator">36 + 10</gadget>
<output>46</output>

<gadget id="calculator">36 - 10</gadget>
<output>26</output>

<gadget id="calculator">26 + 1</gadget>
<output>27</output>

<gadget id="calculator">27 / 2</gadget>
<output>27/2 = around 13.5</output>

<gadget id="calculator">46 * (27/2)</gadget>
<output>621</output>

<result>621</result>