Given the following shapes: a rectangle with width 4 and height 5, a right_triangle with base 7 and height 4, a right_triangle with base 2 and height 9, a right_triangle with base 2 and height 8. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Rectangle with width 4 and height 5: Area = 4 x 5 = 20
Right triangle with base 7 and height 4: Area = 0.5 x 7 x 4 = 14.0
Right triangle with base 2 and height 9: Area = 0.5 x 2 x 9 = 9.0
Right triangle with base 2 and height 8: Area = 0.5 x 2 x 8 = 8.0</think>

<answer>51</answer>