The difference between the two numbers is 14.5. If the minuend is decreased by 3 and the subtrahend is increased by 5, what is the difference?
两个数的差是14.5，如果被减数减少3，减数增加5，差是多少？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">14.5 - 8</gadget>
<output>6.5</output>

<result>6.5</result>