dogyears

#calculate the number of dog years from the age of a dog
#
age = input('Enter the age of your dog in years ')

#convert string input to int type
age_num = int(age)

#multiply by 7 to claculate dog years
dog_age = age_num * 7

#convert that back to a string type ready to print
dog_age_str = str(dog_age)

#print it out
print('Your dog is ' + dog_age_str + ' dog years old.')