There are 36 potted flowers in a square array, how many pots are placed on each side of the outermost layer.
用36盆花摆了一个方阵，最外层每边摆有多少盆．
<gadget id="calculator">36 + 4</gadget>
<output>40</output>

<gadget id="calculator">40 / 4</gadget>
<output>10</output>

<result>10</result>