0001-18.py

class SubstackArticle:
    def __init__(self, number_of_words):
        self.number_of_words = number_of_words

    def __mul__(self, other):
        if isinstance(other, int):
            return SubstackArticle(self.number_of_words * other)
        return NotImplemented

    def __rmul__(self, other):
        return self.__mul__(other)

    def __repr__(self):
        return f"SubstackArticle({self.number_of_words})"

my_article = SubstackArticle(1000)

print(my_article * 3)
# SubstackArticle(3000)

print(3 * my_article)
# SubstackArticle(3000)

print(my_article * "3")
# TypeError: can't multiply sequence by non-int of type 'SubstackArticle'

print("3" * my_article)
# TypeError: can't multiply sequence by non-int of type 'SubstackArticle'