Sellisent

import telebot
import config

CALC_BOT_TOKEN = 'ТОКЕН'
bot = telebot.TeleBot(CALC_BOT_TOKEN)

@bot.message_handler(commands=['start'])
def start(message):
    bot.send_message(message.chat.id, 'CoreIeX Calculator!!!')

@bot.message_handler(content_types=['text'])
def calc(message):
    try:
        bot.send_message(message.chat.id, eval(message.text))
    except:
        bot.send_message(message.chat.id, f'Not this:{message.text}!!!')
        pass

bot.polling()