Shrimp Jumbalaya

• 1/2 stick margarine
• 250 gr shrimp (peeled)
• 180 gr rice (uncooked)
• 65 gr bell pepper (chopped)
• 60 gr onion (chopped)
• 60 gr green onions (chopped)
• 50 gr celery (chopped)
• 1 package beef broth
• 1 package rotel tomatoes with green chilies
• 1 package mushrooms