What is the product of the sum of 0.5 and 0.5 multiplied by 0.5?
0.5与0.5的和乘0.5，积是多少？
<gadget id="calculator">0.5 + 0.5</gadget>
<output>1</output>

<gadget id="calculator">1 * 0.5</gadget>
<output>0.5</output>

<result>0.5</result>