What is the product of the difference between 3.6 minus 0.8 and the sum of 1.8 and 2.05?
3.6减去0.8的差乘1.8与2.05的和，积是多少？
<gadget id="calculator">3.6 - 0.8</gadget>
<output>2.8</output>

<gadget id="calculator">1.8 + 2.05</gadget>
<output>3.85</output>

<gadget id="calculator">2.8 * 3.85</gadget>
<output>10.78</output>

<result>10.78</result>