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680 of them.
1 dm
40 dm
8 dm
.001 hm are in a dm
100 mm in a dm
680
Answer: 680 yd = 0.386363 miles.
There are 42.5 pounds in 680 ounces.
About 2.23 feet are in 680 millimeters.
200 dm
2.5 dm
180 dm