(4/5) of a number is 160, what is (1/8) of this number.
一个数的(4/5)是160，这个数的(1/8)是多少．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">160 / (4/5)</gadget>
<output>200</output>

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

<gadget id="calculator">200 * (1/8)</gadget>
<output>25</output>

<result>25</result>