<gadget id="calculator">0.2 + 0.4 + 0.1</gadget>
<output>0.7</output>

<result>0.7</result>
Irwin's family went on a camping trip in the mountains. On the first day, they hiked from their car to the campsite. First, they hiked 0.2 of a mile from the car to a stream, and 0.4 of a mile from the stream to a meadow. Then they hiked 0.1 of a mile from the meadow to the campsite. How many miles did Irwin's family hike in all?
Irwin's family went on a camping trip in the mountains. On the first day, they hiked from their car to the campsite. First, they hiked 0.2 of a mile from the car to a stream, and 0.4 of a mile from the stream to a meadow. Then they hiked 0.1 of a mile from the meadow to the campsite. How many miles did Irwin's family hike in all?