Sandra Bullock

Sandra Bullock is set to rake in a ton of cash from her film Gravity.

The brunette star is expected to take in about $70million … yes, seventy million dollars, from the blockbuster flick. How is that possible? Well, a lot of it has to do with just how huge of a draw she is at the box office, especially after the success of The Blind Side.

The Hollywood Reporter is claiming they’ve got an exclusive source saying that Sandra was guarenteed $20million up front, and 15% of the “first dollar gross.” So what does that mean?

Each studio negotiates individual deals with theater owners to determine what those rentals are, but a rule of thumb is that the studio will collect roughly 40 to 50 percent of the box office (it gets somewhat less in foreign markets than domestically).

Gravity has earned more than $700 million at the worldwide box office and is expected to cross the $750 million mark. Assuming Warners gets 45 percent of that, Bullock’s take would be more than $50 million, including her upfront payment. But theatrical revenue is just one part of what she’ll make, as she also gets a percentage from home video, TV and ancillary revenue.

Photos via WENN.