I noticed a problem which appeared on this answer from Stack Overflow. In the answer there is an ordered list, and after the first item in the list there is a 'pre' tag. For some reason, even though the list in edit mode starts with 2, it appears to start from 1.
This is the text in edit mode:
1. Tokenize the string. See what each symbol is. For example, the list may contain: <pre>'(' Open parentheses '11' Number '+' Operator etc</pre> 2. Convert the expression to [postfix]...
And this is how I see it: