def left_shift(number, n):
    """
    Left shift on 10 base number.

    Parameters
    ----------
    number : integer
        the number to be shift
    n : integer
        the number of digit to shift

    Returns
    -------
    shifted number : integer
        the number left shifted by n digit

    Examples
    --------
    >>> left_shift(152, 1)
    15
    >>> left_shift(14589, 3)
    14
    """
    return number // 10 ** n