line break in the product titles

I need to add a text about each product title. currently it would look like this

# 1212 Hi, I’m a product title

and the right way would be like this

# 1212
Hello, I am the title of the product

I tried like this

# 1212 <br> Hi, I’m a product

but on the site is seen the <br>

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Hello,

HTML tags are not effective in a page title. It is not possible to make the title in two lines in such a way

Best Regards

[Author]

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