Draw the flag of Belgium using the given draw_rectangle() function.

The turtle starts in the middle of the canvas, facing right. The flag’s top-left corner is at (0, 0), where the turtle starts.

The flag is 120 units wide and 104 units high. It has three equal vertical stripes, each 40 units wide. From left to right, their colors are "black", "yellow", and "red". Give each stripe a black outline.

Call draw_rectangle() once for each stripe. The function is already in the starter code. The function needs the top-left position, width, height, outline color, and fill color.