how to add a word to the pricing on front page

Hi,
I would like to add a word to the pricing on the front page.
Right now the page features product name, picture, price, and Add to Cart button.
I need to add a single word to the line with the price like:
$65.00 – Monthly
Where can I find this template, or how to do it?

Best if you could help me change the Product Page too for the same purpose.