Making $670.00 per day working from home will be hard but it's not impossible.
There are some people out there who earn $670.00 per day and even $1,000.00 per day or more blogging or running another type of website.
The blogger or website owner can earn that money through several ways such as Adsense, Media.net other ad networks, direct ad sales, affiliate sales, selling their own product.
Another way for a website owner to earn up to $1,000.00 per day or more is to run a paid membership website where members pay a fee each month to access all or parts of the website.
There's also some article writing and type at home jobs online that claim you can make $600.00 per day working from home but I've never tried those since most times the type at home jobs are data entry which requires experience.
You could however start your own blog on a topic you know a lot about and then build up the traffic over the years and if you continue to work on the blog over the years you may eventually be able to earn $670.00 per day through Adsense alone or through affiliate products.
Imagine if you could just get 6 affiliate sales per day and those affiliate sales paid you a commission of $100.00 per sale?
You could earn $600.00 per day from those 6 affiliate sales so it's doable. But it requires hard work and patience.