Cut off half of a rope, more than 4 meters, and then cut off the remaining half, leaving 43 meters. How long is this rope?
一根绳子剪去一半多4米，再剪去余下的一半，还剩43米，这根绳子长多少米？
<gadget id="calculator">43 * 2</gadget>
<output>86</output>

<gadget id="calculator">86 + 4</gadget>
<output>90</output>

<gadget id="calculator">90 * 2</gadget>
<output>180</output>

<result>180</result>