(4/5) minus the quotient of (2/7) divided by (5/7), multiply the difference by (5/6), what is the product?
(4/5)减去(2/7)除以(5/7)的商，所得的差乘(5/6)，积是多少？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

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

<gadget id="calculator">(2/7) / (5/7)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(4/5) - (2/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(2/5) * (5/6)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>