import re


def conv_estimate_number(s):
    """Convert a string representing a number with error to a float number.

    Literally, string like '3.87(6)' will be converted to 3.876.
    For now, estimate error in the parenthese is reserved.

    Args:
        s (str): number string

    Retuns:
        float
    """
    return float(re.sub(r"[\(\)]", "", s))