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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _int2coord(x, y, dim):
 """Convert x, y values in dim x dim-grid coordinate system into lng, lat values. Parameters: x: int x value of point [0, dim); corresponds to longitude y: int y value of point [0, dim); corresponds to latitude dim: int Number of coding points each x, y value can take. Corresponds to 2^level of the hilbert curve. Returns: Tuple[float, float]: (lng, lat) lng longitude value of coordinate [-180.0, 180.0]; corresponds to X axis lat latitude value of coordinate [-90.0, 90.0]; corresponds to Y axis """

    assert dim >= 1
    assert x < dim
    assert y < dim

    lng = x / dim * 360 - 180
    lat = y / dim * 180 - 90

    return lng, lat