What is the result of dividing the sum of 3.75 and 1.25 by 2.5, adding 16.5, and multiplying by 0.5?
3.75与1.25的和除以2.5，再加上16.5，然后乘以0.5，结果是多少？
<gadget id="calculator">3.75 + 1.25</gadget>
<output>5</output>

<gadget id="calculator">5 / 2.5</gadget>
<output>2</output>

<gadget id="calculator">2 + 16.5</gadget>
<output>18.5</output>

<gadget id="calculator">18.5 * 0.5</gadget>
<output>9.25</output>

<result>9.25</result>