meters (1/7) is as much as 1 meter.
5米的(1/7)和1米的多少同样多．
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

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

<gadget id="calculator">5 * (1/7)</gadget>
<output>5/7 = around 0.714286</output>

<result>5/7 = around 0.714286</result>