Xiaoming's electricity bill was 40 yuan last month, and it was used more this month (1/8). How much is the electricity bill this month?
小明家上个月电费40元，这个月多用了(1/8)．这个月电费多少元？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 + (1/8)</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">40 * (9/8)</gadget>
<output>45</output>

<result>45</result>