Divide the quotient of (7/8) by (1/5), and then divide (5/6), what is the number?
用(1/5)除(7/8)的商，再去除(5/6)，得数是多少？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

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

<gadget id="calculator">(7/8) / (1/5)</gadget>
<output>35/8 = around 4.375</output>

<gadget id="calculator">(5/6) / (35/8)</gadget>
<output>4/21 = around 0.190476</output>

<result>4/21 = around 0.190476</result>