Given the following shapes: a right_triangle with base 3 and height 6, a rectangle with width 6 and height 5, a right_triangle with base 3 and height 7, a rectangle with width 4 and height 7. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 3 and height 6: Area = 0.5 x 3 x 6 = 9.0
Rectangle with width 6 and height 5: Area = 6 x 5 = 30
Right triangle with base 3 and height 7: Area = 0.5 x 3 x 7 = 10.5
Rectangle with width 4 and height 7: Area = 4 x 7 = 28</think>

<answer>78</answer>