A rope is cut 12 meters each time, and 4 meters are left after 6 cuts. How long is the rope originally?
一根绳子每次剪去12米，剪了6次还剩4米，这根绳子原来长多少米．
<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<gadget id="calculator">72 + 4</gadget>
<output>76</output>

<result>76</result>