For the DIY club activity, Teacher Wang bought a roll of red ribbon to organize students to learn how to make Chinese knots. The length used by the first group was 2 meters less than 35% of the length of the whole roll of red ribbon, and the second group used 8 meters. At this time, the ratio of the remaining length to the length of the used ribbon is 2:3. How many meters is the roll of red ribbon that Teacher Yu bought back?
DIY社团活动，王老师买了一卷红丝带组织同学们学做中国结，一小组所用的长度比整卷红丝带长度的35%少2米，二小组用了8米．这时，剩下的长度与已用丝带长度的比是2：3，玉老师买回的这卷红丝带一共有多少米？
<gadget id="calculator">8 - 2</gadget>
<output>6</output>

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

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(2/5) - (7/20)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">6 / (1/20)</gadget>
<output>120</output>

<result>120</result>