my_name = 'python'
my_age = 30

print(my_name,'은 이제',my_age+1,'old')

multiply = 9*9
divide = 30/5 # 6
power = 2**10 # = 1024
reminder = 15 % 4 # = 3 

text = '2015' + '2015'
number = 2015 + 2015
print(text)
print(number)