The sixth grade students participated in comprehensive practical activities. The students in the first class of the sixth grade weaved 8 large "Chinese knots" with ribbons of 11.2 meters; How many meters more ribbons are used for each big "Chinese knot" than for each small "Chinese knot"?
六年级同学参加综合实践活动，六年一班同学编了8个大"中国结"，用彩带11.2米；六年二班同学编了24个小"中国结"，用彩带16.32米．每个大"中国结"比每个小"中国结"多用彩带多少米？
<gadget id="calculator">11.2 / 8</gadget>
<output>1.4</output>

<gadget id="calculator">16.32 / 24</gadget>
<output>0.68</output>

<gadget id="calculator">1.4 - 0.68</gadget>
<output>0.72</output>

<result>0.72</result>