Spicy Orange Beef

1/4 cup orange juice concentrate
3 tablespoons soy sauce
3 tablespoons water
1 tablespoon cornstarch
1 tablespoon finely grated orange peel
1 teaspoon granulated sugar
5 tablespoons vegetable oil, divided
2 garlic cloves, minced
4 cups broccoli florets
12 scallions, with tops, cut into 1-inch pieces
1/2 teaspoon ground ginger
1/4 teaspoon crushed red pepper flakes
1 (1 pound) boneless sirloin steak, cut into thin strips
3 medium oranges, sectioned
Hot cooked rice

In a small bowl combine the first six ingredients; set aside. In a large skillet or wok, heat 3 tablespoons oil over medium heat; saut