from functools import reduce


def multiply_ints_list(tokens):
    """
    parse action to multiply integers in a VBA expression with operator '*'
    """
    # extract argument from the tokens:
    # expected to be a tuple containing a list of integers such as [a,'&',b,'&',c,...]
    integers = tokens[0][::2]
    return reduce(lambda x,y:x*y, integers)