python 3 the hard way exe 24 focus on the tuple error

#from http://learnpythonthehardway.org/book/ex24.html
# narrowed down the code around the tuple problem
# the original code from the site is written for Python 2.7
#below is written for python 3.3
def secret_formula(started):
    jelly_beans= started *500
    jars = jelly_beans / 1000
    crates = jars / 100
    return jelly_beans, jars, crates

start_point = 10000
beans, jars, crates = secret_formula(start_point)

print ("With a starting point of: {}".format(start_point))
print ("We'd have {} beans, {} jars, and {} crates.".format(beans, jars, crates))

start_point = (start_point /10)

print ("We can also do that this way: ")
print ("Start point",start_point)#testing what interpreter sees
print ("secret formula", secret_formula)#testing what interpreter sees
print ("We'd have {} beans, {} jars, and {} crates.".format (secret_formula(start_point)))
#error text
"""
With a starting point of: 10000
We'd have 5000000 beans, 5000.0 jars, and 50.0 crates.
We can also do that this way:
Start point 1000.0
secret formula <function secret_formula at 0x0000000003D1D1E0>
Traceback (most recent call last):
  File "C:/Python33/PTHW24a.py", line 18, in <module>
    print ("We'd have {} beans, {} jars, and {} crates.".format (int(secret_formula(start_point))))
TypeError: int() argument must be a string or a number, not 'tuple'
"""