The perimeter of a rectangle is 6.28 decimeters, which is equivalent to (2/3) of the circumference of a circle. How many decimeters is the radius of this circle?
一个长方形的周长是6.28分米，相当于一个圆周长的(2/3)，这个圆的半径是多少分米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6.28 / (2/3)</gadget>
<output>9.42</output>

<gadget id="calculator">9.42 / 3.14 / 2</gadget>
<output>1.5</output>

<result>1.5</result>