If a+b=40, then a*(1/8)+b*(1/8)=how much.
若a+b=40，那么a*(1/8)+b*(1/8)=多少．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

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

<result>5</result>