New GitHub issue #119300 from yuliyu123:<br>

<hr>

<pre>
# Bug report

### Bug description:

There has simple float number calculation in version 3.11.5, when use Python terminal:

```python
>>> 8.4 - 1.8
6.6000000000000005
```

Obviously it's a incorrect result.


### CPython versions tested on:

3.11

### Operating systems tested on:

macOS
</pre>

<hr>

<a href="https://github.com/python/cpython/issues/119300">View on GitHub</a>
<p>Labels: type-bug</p>
<p>Assignee: </p>