If (5/6) of a number is 80, what is (7/8) of this number?
一个数的(5/6)是80，则这个数的(7/8)是多少．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">80 / (5/6)</gadget>
<output>96</output>

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

<gadget id="calculator">96 * (7/8)</gadget>
<output>84</output>

<result>84</result>