Veal Stew W/ Oranges, Carrots & Mushrooms

• 2 onions (chopped)
• 2 oranges
• 1,000 gr veal stew meat cubed
• 290 gr mushrooms (halved)
• 250 gr baby carrots (peeled)
• 240 ml chicken broth
• 60 ml olive oil
• 40 gr flour all-purpose
• 3 gr salt
• 1 gr black pepper