To calculate 1-(1/8), you can think of 1 as how many ((())/(())), it is ((())/(())), so 1-(1/8)= ((())/(()))-(1/8)=((())/(())).
计算1-(1/8)，可以把1看成多少个((())/(()))，是((())/(()))，所以1-(1/8)=((())/(()))-(1/8)=((())/(()))．
<gadget id="calculator">8 / 1</gadget>
<output>8</output>

<result>8</result>