What is the product of 16 plus the quotient of 0.5 divided by 2.5, and then multiply by 0.8?
16加上0.5除2.5的商，再乘0.8，积是多少？
<gadget id="calculator">2.5 / 0.5</gadget>
<output>5</output>

<gadget id="calculator">16 + 5</gadget>
<output>21</output>

<gadget id="calculator">21 * 0.8</gadget>
<output>16.8</output>

<result>16.8</result>