Subtract the sum of (1/2) and (1/2) from 1, divide the difference by (1/2), what is the quotient? What is the quotient of the sum of (1/2) and (1/2) divided by their difference?
1减去(1/2)与(1/2)的和，所得的差除以(1/2)，商是几？(1/2)与(1/2)的和除他们的差，商是几？
<gadget id="calculator">1 - 1</gadget>
<output>0</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">0 / (1/2) / 1</gadget>
<output>0</output>

<result>0</result>