A rope is 12 meters long. It is not folded in half. It is cut 3 times into several sections of the same length. How long is each section in meters?
一根绳子长12米，不对折，剪3次成一样长的若干段，每段长多少米
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>3</result>