TST: Series Division with zeros numpy array (#8674)
 - [x] closes #8674
 - [x] tests added / passed
 - [x] passes ``git diff upstream/master | flake8 --diff``

This issue operates normally on master and relates to Python's 2.x division. Doesn't appear that any PRs in 0.20 addressed this issue. 
## [Current coverage](https://codecov.io/gh/pandas-dev/pandas/pull/15013?src=pr) is 84.78% (diff: 100%)
> Merging [#15013](https://codecov.io/gh/pandas-dev/pandas/pull/15013?src=pr) into [master](https://codecov.io/gh/pandas-dev/pandas/branch/master?src=pr) will increase coverage by **<.01%**

```diff
@@             master     #15013   diff @@
==========================================
  Files           145        145          
  Lines         51090      51090          
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
==========================================
+ Hits          43315      43316     +1   
+ Misses         7775       7774     -1   
  Partials          0          0          
```

> Powered by [Codecov](https://codecov.io?src=pr). Last update [0d3ecfa...7a614c4](https://codecov.io/gh/pandas-dev/pandas/compare/0d3ecfa8ba3930b688a6781c7f84138bc80da41a...7a614c4da363db900fbf1b1122908eecff013498?src=pr) @mroeschke Thanks!