A (4/7) meter long wooden strip is sawed into 4 sections on average, what is the length of each section in meters
一根(4/7)米长的木条平均锯成4段，每段的长度是多少米
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(4/7) * (1/4)</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>