def get_play_fair_row_col(playfair_grid,letter):
    """[get which row, col a letter is within a playfair grid]

    Args:
        playfair_grid ([list]): [playfair grid]
        letter ([str]): [letter you wan the row/column for]

    Returns:
        [row, col]: [the row and column for the letter passed in
        using the playfair grid passed in]
    """
    
    pos_in_grid=playfair_grid.index(letter)
    row,col=divmod(pos_in_grid,5)
    
    return row, col