(1/8)X-1=0.2．
(1/8)X-1=0.2．
<gadget id="calculator">1 + 0.2</gadget>
<output>1.2</output>

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

<gadget id="calculator">1.2 / (1/8)</gadget>
<output>9.6</output>

<result>9.6</result>