import math
from decimal import Decimal, getcontext

__author__ = "Jan-Niclas Loosen"


def calc(const):
    summe = Decimal(0)
    for k in range(1, 100):
        summe += (Decimal(const) ** k) / math.factorial(k)
    return summe

getcontext().prec = 1000  # Set the precision for Decimal calculations
print(calc(math.log(2)))