Chengde Mountain Resort covers an area of about 560 hectares, of which the mountain area accounts for about (4/5) of the entire garden, and the green area is less than the mountain area (1/8), and the green area accounts for about ((())/(()) of the entire garden )).
承德避暑山庄面积约560公顷，其中山地面积约占整个园林的(4/5)，绿化面积比山地面积少(1/8)，绿化面积约占整个园林的((())/(()))．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 - (1/8)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 * (4/5) * (7/8)</gadget>
<output>7/10 = around 0.7</output>

<result>7/10 = around 0.7</result>