Subtract the quotient of (6/7) divided by (6/5) from the reciprocal of (9/7). What is the difference?
从(9/7)的倒数里减去(6/7)除以(6/5)的商，差是多少？
<gadget id="calculator">9 / 7</gadget>
<output>9/7 = around 1.285714</output>

<gadget id="calculator">1 / (9/7)</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/7) / (6/5)</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">(7/9) - (5/7)</gadget>
<output>4/63 = around 0.063492</output>

<result>4/63 = around 0.063492</result>