Python 3.6.5 (default, Apr  1 2018, 05:46:30) 
[GCC 7.3.0] on linux
Type "copyright", "credits" or "license()" for more information.
>>> ## Exercício 2.1
>>> 10+20*30
610
>>> 4**2/30
0.5333333333333333
>>> (9**4+2)*6-1
39377
>>> 
