A rope, 4.5 meters are cut off, and the rest is 1.5 meters more than 60% of the original total length, what is the original length of the rope?
一根绳子，剪下4.5米，剩下的比原来总长的60%还多1.5米，这根绳子原来长多少米．
<gadget id="calculator">4.5 + 1.5</gadget>
<output>6</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">6 / (2/5)</gadget>
<output>15</output>

<result>15</result>