well, it's faster with the old habits... ;)

Should be good, now.

@FArekkusu: that means you should update the 2kyu version with the same kind of assertions.

• % -> corrected
• rouding problem: no it shouldn't. I'll try the new framework to handle that. I'll keep you posted.

Python 3.4.3: 5th test is '18%2' with result 9. I presume that is a typo and the '%' should be '$'?
Also I pass all test other than a small number where there is a 10th or more decimal place rounding error.
For example:

874.1153846153846 should equal 874.1153846153845
Note: a 16 digit answer is required
161.1598611111111 should equal 161.15986111111113
Note: a 17 digit answer is required

is this part of the challenge because there seems to be arbitary precision in answers and no guidance in the notes.