#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Thu Sep 18 17:10:29 2025

@author: s
"""

import numpy as np

# Berechnungen
def main():
    a=4+7
    b=7*9
    c=np.log(10)/np.log(4)
    d=np.sin(np.pi/2)
    
    # Ausgabe
    print(f"a: {a}")
    print(f"b: {b}")
    print(f"c: {c}")
    print(f"d: {d}")
    
main()