How much less is half the sum of 7.46 plus 6.5 than 20?
7.46加上6.5的和的一半比20少多少？
<gadget id="calculator">7.46 + 6.5</gadget>
<output>13.96</output>

<gadget id="calculator">13.96 / 2</gadget>
<output>6.98</output>

<gadget id="calculator">20 - 6.98</gadget>
<output>13.02</output>

<result>13.02</result>