There is a 12-meter-long rope. Fold its two ends in half, and then fold it in half again. How many meters is each section at this time?
有一根12米长的绳子，把它两端对折，然后再对折，这时每段长多少米．
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>3</result>