@dp.callback_query_handler(lambda callback_query: callback_query in ['5gb_kolvo', '10gb_kolvo', '15gb_kolvo', '20gb_kolvo', '25gb_kolvo', '30gb_kolvo'])
async def cl2(call: types.CallbackQuery):
s = call.message.text
many = s.split('g')[0]
await bot.send_message(call.message.chat.id, f'{many}\nИтого к оплате: {many*db.gb_current_price()} '.format(call.message.chat.id),
reply_markup = nav.main_menu)