piece of iron wire can form a rectangle with a length of 10 decimeters and a width of 6 decimeters. If it is used to form a square, what is the side length of the square?
一条铁丝可以围成一个长10分米，宽6分米的长方形，如果用它围成一个正方形，正方形的边长是多少分米？
<gadget id="calculator">10 + 6</gadget>
<output>16</output>

<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">16 * (1/2)</gadget>
<output>8</output>

<result>8</result>