A (4/5) meter long rope is folded in half, and then folded in half again, how many meters is each length?
一根(4/5)米长的绳子对折、再对折，每段长多少米．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) / 4</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>