While I don’t think “sum” is an appropriate word for this challenge, yes, there should be only one thing printed in the console — either True or False.
There are two ways you can format your code to make it easier to read and test:
After you copy/paste your code into the editor, select it by dragging your cursor over it then click the (</>) button in the toolbar to automatically wrap your code in backticks. (You can click on the animated demo image below to enlarge it.)
Manually add three backticks on a new line above your code and on a new line after your code. Note that a backtick is NOT the same as a single quote('). To find the backtick key on your keyboard, see this post.
To see changes to your post as you make them, you can click the (M+) button on the toolbar to bring up the rich text editor: