<|im_start|>system
You are a helpful assistant. You first think about the reasoning process in the mind and then provide the user with the answer. You should try to truely solve the question by yourself without cheating.  <|im_end|>
<|im_start|>user
 The dimensions of a multi-purpose hall are 40 feet * 30 feet * 20 feet. The hall needs to be white washed. The cost of white washing the walls is Rs. 2 per square feet, and for the ceiling, it's Rs. 3 per square feet. The hall has three doors of dimensions 7 feet * 4 feet and five windows - three of dimensions 5 feet * 4 feet and two of dimensions 4 feet * 3 feet. Calculate the total cost of white washing the four walls & ceiling of this hall after subtracting the area of the doors and windows. Show your work in <think> </think> tags. And return the final answer in <answer> </answer> tags.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>
user
8864
The dimensions of a multi-purpose hall are 40 feet * 30 feet * 20 feet. The hall needs to be white washed. The cost of white washing the walls is Rs. 2 per square feet, and for the ceiling, it's Rs. 3 per square feet. The hall has three doors of dimensions 7 feet * 4 feet and five windows - three of dimensions 5 feet * 4 feet and two of dimensions 4 feet * 3 feet. Calculate the total cost of white washing the four walls & ceiling of this hall after subtracting the area of the doors and windows.
test