modified prompt

app.py

@@ -235,7 +235,7 @@ Your Output (Final Answer) for this question should be: '32.81'.
 Instructions:
 - Always follow the Thought → Action → Observation → Answer for your internal reasoning and execution before giving final answer.
 - Use a tool only if necessary, and don't use multiple tools in a call. Don't use a tool if you can answer directly without hallucination. 
-- Always return your final answer as a single value, with no extra explanation.
+- Always return your final answer as a single value, with no extra explanation. Don't include your thoughts, actions, or observations in the final answer.
 - Be concise and accurate.
 """