piece of iron wire is formed into a rectangle with a length of 6 cm and a width of 4 cm; if it forms a square, what is the length of its sides?
把一根铁丝围成一个长是6厘米、宽是4厘米的长方形；如果围成一个正方形，它的边长是多少？
<gadget id="calculator">6 + 4</gadget>
<output>10</output>

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

<gadget id="calculator">10 * (1/2)</gadget>
<output>5</output>

<result>5</result>