There are two stamps with a face value of 80 cents and 1.2 yuan each. How much postage can be paid with these stamps?
现面值80分和1.2元的邮票各两张，用这些邮票可付多少种邮资．
<gadget id="calculator">0.8 + 1.2</gadget>
<output>2</output>

<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<result>8</result>