This is not as simple as it appears. If you want to convert from geographic coordinates such as Lat/Longs degrees, to projected coordinates, for example UTM meters, then you will have to know your 'target' projection.
The target projection is not one-size-fits-all like you may think. Your target projection varies according to your map's location. Examples include, but are not limited to, UTM Zone, a Country system, a Continental or Regional system, a portion of a country such as east zone or west zone, or something else. You will also have to determine which 'version year' of a coordinate system you wish to target because coordinate systems are often revised, updated or improved due to better information and/or higher accuracy. As you can see, a lisp is not an efficient way to accommodate all factors needed to transform your coordinates from Lat/Long degrees to X,Y-meters.
You are better off using AutoCad Civil 3D or Map 3D, Unlike Vanilla AutoCad, both programs can handle transformations due to their built-in Coordinate System Libraries which give them geospatial capabilities.
Alternatively you can use an online converter such as >>ZONUMS<< You can even paste a csv file into this online converter
Whether you use lisp, Civil, Map or an online converter to perform the transformation, you will still have to determine your desired projection.
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Chicagolooper
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