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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 items_with_price(raw_df):
 """ Dataframe with price as number. """

    df = (
        raw_df
        [['PRONAC', 'idPlanilhaAprovacao', 'Item',
            'idPlanilhaItens', 'VlUnitarioAprovado',
            'idSegmento', 'DataProjeto', 'idPronac',
            'UfItem', 'idProduto', 'cdCidade', 'cdEtapa']]
    ).copy()

    df['VlUnitarioAprovado'] = df['VlUnitarioAprovado'].apply(pd.to_numeric)
    return df