Cong Cong weaves a large "Chinese Knot" with a ribbon of 1.3 meters, and Mingming weaves 13 small "Chinese Knots" with a ribbon of 8.45 meters. How many times as many ribbons are used for each big "Chinese knot" than for each small "Chinese knot"?
聪聪编1个大"中国结"用彩带1.3米，明明编13个小"中国结"用彩带8.45米．每个大"中国结"用的彩带是每个小"中国结"的几倍？
<gadget id="calculator">8.45 / 13</gadget>
<output>0.65</output>

<gadget id="calculator">1.3 / 0.65</gadget>
<output>2</output>

<result>2</result>