piece of iron wire can enclose an equilateral triangle with a side length of 16 cm. If this wire is used to enclose a rectangle with a length of 17 cm, what is the width of the rectangle in cm?
一根铁丝可以围成一个边长16厘米的正三角形，如果用这根铁丝改围一个长17厘米的长方形，长方形的宽是多少厘米？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">16 * (3/2)</gadget>
<output>24</output>

<gadget id="calculator">24 - 17</gadget>
<output>7</output>

<result>7</result>