There are 10 floors in a square peach garden, and 16 trees are planted in the innermost layer. If each peach tree bears 60 kilograms of peaches, how many kilograms of peaches can be harvested in this peach garden?
方阵形桃园共10层，最里层共种16棵树，若每棵桃树结桃子60千克，那么这桃园共收桃多少千克．
<gadget id="calculator">16 + 4</gadget>
<output>20</output>

<gadget id="calculator">20 / 4</gadget>
<output>5</output>

<gadget id="calculator">2 * 9</gadget>
<output>18</output>

<gadget id="calculator">5 + 18</gadget>
<output>23</output>

<gadget id="calculator">23 - 10</gadget>
<output>13</output>

<gadget id="calculator">13 * 10 * 4</gadget>
<output>520</output>

<gadget id="calculator">520 * 60</gadget>
<output>31_200</output>

<result>31_200</result>