Divide the quotient of 6.8 by 3.2, minus the product of 4.25 and 0.5, what is the difference?
6.8除以3.2的商，减去4.25与0.5的积，差是多少？
<gadget id="calculator">6.8 / 3.2</gadget>
<output>2.125</output>

<gadget id="calculator">4.25 * 0.5</gadget>
<output>2.125</output>

<gadget id="calculator">2.125 - 2.125</gadget>
<output>0</output>

<result>0</result>