Complex sentence: This film, which cost $10 million, received mediocre reviews and did poorly at the box-office with the film only grossing $7.2 million on its US theatrical run.
Split into simpler sentences: This film, which cost $10 million, was not a theatrical success. It received mediocre reviews and did poorly at the box-office with the film only grossing $7.2 million on its US theatrical run.