What is the quotient of the difference of 1 minus (3/10) divided by the sum of (3/8) plus 0.5?
1减去(3/10)的差除以(3/8)加上0.5的和，商是多少？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(3/8) + 0.5</gadget>
<output>0.875</output>

<gadget id="calculator">(7/10) / 0.875</gadget>
<output>0.8</output>

<result>0.8</result>