A rope, cut off 15 meters, the remaining is 8 times used. How many meters is this rope in total?
一根绳子，截去15米，剩下的是用去的8倍．这根绳子一共有多少米．
<gadget id="calculator">15 * 8</gadget>
<output>120</output>

<gadget id="calculator">120 + 15</gadget>
<output>135</output>

<result>135</result>