There are two ribbons, the first one is 6.2 meters long, the second one is 0.2 meters shorter than twice the first one, how many meters are the total length of the two ribbons?
有两条绸带，第一条长6.2米，第二条比第一条的2倍少0.2米，两条绸带共长多少米？
<gadget id="calculator">6.2 * 2</gadget>
<output>12.4</output>

<gadget id="calculator">12.4 - 0.2</gadget>
<output>12.2</output>

<gadget id="calculator">12.2 + 6.2</gadget>
<output>18.4</output>

<result>18.4</result>