Subtract 40 (1/8) from 3 3.5, what is the difference?
从3个3.5里减去40的(1/8)，差是多少？
<gadget id="calculator">3.5 * 3</gadget>
<output>10.5</output>

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

<gadget id="calculator">(1/8) * 40</gadget>
<output>5</output>

<gadget id="calculator">10.5 - 5</gadget>
<output>5.5</output>

<result>5.5</result>