The sum of the inner and outer circumferences of a ring is 50.24 cm, and the radius of the inner circle is (3/5) that of the outer circle. Find the width of the ring.
一个圆环的内外圆周长之和为50.24厘米，且内圆半径是外圆半径的(3/5)，求圆环的宽度．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">50.24 / 3.14 / 2 / (8/5)</gadget>
<output>5</output>

<gadget id="calculator">50.24 / 3.14 / 2</gadget>
<output>8</output>

<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<result>2</result>