Orange Cake With Orange Sauce

• 500 g Butter
• 500 g Icing sugar
• 11 nos Egg
• 1 no Orange sliced
• 1 cup Orange juice squeezed
• 450 g Flour
• 5 g Baking powder

For preparing orange sauce:

• 400 ml Orange juice
• 85 g Sugar
• 40 g Liquid glucose