import re


def convert_range_to_one_amount(string: str) -> str:
    """Converts a range of amount to one (biggest).

    Example
    >>> convert_range_to_one_amount('100 - 200 g of chicken breast')
    200 g of chicken breast

    Args:
        string: String which may contain such range.
    Returns:
        String with converted range (if found)
    """
    return re.sub(r"\d+\s{0,1}-\s{0,1}(\d+)", r"\1", string)