Xiao Liang surrounded a rectangle with 20 small sticks of the same length. The length is 8 small sticks, so how many small sticks are the width?
小亮用20根一样长的小棒围了一个长方形，长是8根小棒，那么宽是多少根根小棒．
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<result>2</result>