I guess, you need to read rules before.
It seems like your solution doesn't pass any test thus you can't see anything.
In case if your solution would pass some tests - you'll see smth like "13/15 passed" and etc.

How did you know numbers of test you didn't pass? I see only error without any numbers...

Fixed.
And still not working. :D
Oh, wait.
Edit_1: Not fixed.
Still, thank you!

Edit_2: HOLY COW!
It's done! Thank you a lot!

There is a bug in your solution. Try this test case: 2 - -(1). The expected result is 3 but your solution returns 1.

-591.8531073446328 should be close to -591.8851251840942 with absolute or relative margin of 1e-06

Keep getting smth like that on Python.
What's this?
I can't use Decimal for better accuracy.
What's then?
According to what i've learnt from comments: this trouble should be caused by wrong priority orders. But i have same priority for (div and mult) and (+ and -). Everything calculates from left to right (with consideriing parentheses priority).
Still have no clue why can't i pass it. -_-

What's in the last test for Python?
It seems like i'm missing something...

No, really.
Passed all random tests, but didn't pass 13 and 14 ones.
What's in there?
It seems like i'm missing some kind of 'input checking'.

Bogosort always's fun! :D