Python 2.5.2 (r252:60911, Feb 21 2008, 13:11:45) [MSC v.1310 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from time import clock
>>> a = 10**10000
>>> b = 10**5000
>>> t1=clock(); c = a//b; t2=clock(); t2-t1
0.009641448843358583
>>> a = 10**100000
>>> b = 10**50000
>>> t1=clock(); c = a//b; t2=clock(); t2-t1
1.0120174491450733

Python 2.6 (r26:66721, Oct  2 2008, 11:35:03) [MSC v.1500 32 bit (Intel)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> from time import clock
>>> a = 10**10000
>>> b = 10**5000
>>> t1=clock(); c = a//b; t2=clock(); t2-t1
0.011122363317125501
>>> a = 10**100000
>>> b = 10**50000
>>> t1=clock(); c = a//b; t2=clock(); t2-t1
1.156279359527538