The lumber company piled up a pile of wood, and Xiao Ming counted it. There are 10 on the top layer, and each lower layer has one more than the upper layer, and there are 6 layers in total. Please calculate how many pieces of this pile of wood there are based on the information Xiaoming got.
木材公司堆放了一堆木料，小明数了数，最顶层有10根，每下面一层比上面一层多1根，共有6层．请你根据小明得到的信息，算一算这堆木料共有多少根．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">10 + 10 + 5</gadget>
<output>25</output>

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

<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<result>75</result>