1.py

a = input("w: ")
b = input("h: ")
print a * b

3_times.py

a = input("w: ")
b = input("h: ")
print a * b

a = input("w: ")
b = input("h: ")
print a * b

a = input("w: ")
b = input("h: ")
print a * b

calc_area_return.py

def calc_area(a, b):
  c = a * b
  return c #or you coul just return a * b

print calc_area(1, 3)
print calc_area(3, 5)

x = calc_area(5, 5)
y = calc_area(3, 2)
total = x + y

print "The total area of a 5x5 square, and a 3x2 rectangle is %d" % (total)

print_from_func.py

def print_area(a, b):
  print a * b

print_area(23, 43)