代码：

print("I will now count my chickens:")

print("hens", 25+30/6)
print("Roosters", 100-25*3%4)
print("I will count the eggs:")
print(3+2+1-5+4%2-1/4+6)
print("Is it true 3+2<5-7?")
print(3+2<5-7)

print("What is 3+2", 3+2)
print("What is 5-7", 5-7)
print("On,that‘s why it‘s False.")
print("How about some more.")

print("Is it greater?", 5 > -2)
print("Is it greater or equal?", 5 >= -2)
print("Is it less or equal?", 5 <= -2)

ex3-数字和数字计算