It is known that the radius of the large circle is longer than the radius of the small circle (1/4). If the circumference of the small circle is 21.98cm, find the circumference of the large circle.
已知大圆半径比小圆半径长(1/4)，如果小圆的周长是21.98cm，求大圆的周长．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">21.98 * (5/4)</gadget>
<output>27.475</output>

<result>27.475</result>