A 28 decimeter long rope, after folding in half and then in half, how long is each piece of rope?
一根28分米长的绳子，对折再对折后，每段绳子有多长？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">28 / 4</gadget>
<output>7</output>

<result>7</result>