Lighten Document Photo Shadows

I have a single photo of a paper document that was taken with a phone. The text itself is reasonably sharp, but the shot is dim and patchy because of uneven lighting; heavy shadows make parts of the page hard to see... (Budget: ₹750 - ₹1250 INR, Jobs: Graphic Design, Image Processing, Photo Editing, Photo Retouching, Photography, Photoshop, Photoshop Design, Visual Arts)