Xiao Le made up 4 big "Chinese knots", sharing a ribbon of 5.2 meters. Xiaohong made 12 small "Chinese knots", sharing 8.16 meters of ribbons. How many meters more ribbons are used for one big "Chinese knot" than for one small "Chinese knot"?
小乐编了4个大"中国结"，共用彩带5.2米．小红编了12个小"中国结"，共用彩带8.16米，编一个大"中国结"比编一个小"中国结"多用彩带多少米？
<gadget id="calculator">5.2 / 4</gadget>
<output>1.3</output>

<gadget id="calculator">8.16 / 12</gadget>
<output>0.68</output>

<gadget id="calculator">1.3 - 0.68</gadget>
<output>0.62</output>

<result>0.62</result>