The perimeter of a rectangle is 24 centimeters, the known width is long (1/3), what is the width of the rectangle in centimeters.
一个长方形的周长是24厘米，已知宽是长的(1/3)，这个长方形的宽是多少厘米．
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">12 / (4/3)</gadget>
<output>9</output>

<gadget id="calculator">12 - 9</gadget>
<output>3</output>

<result>3</result>