Given the following shapes: a right_triangle with base 5 and height 7, a right_triangle with base 6 and height 3, a right_triangle with base 8 and height 9, a rectangle with width 5 and height 4. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 5 and height 7: Area = 0.5 x 5 x 7 = 17.5
Right triangle with base 6 and height 3: Area = 0.5 x 6 x 3 = 9.0
Right triangle with base 8 and height 9: Area = 0.5 x 8 x 9 = 36.0
Rectangle with width 5 and height 4: Area = 5 x 4 = 20</think>

<answer>82</answer>