Update app.py

app.py

@@ -290,12 +290,29 @@ def extract_text_from_unstract(uploaded_file):
         return r.text
 
 def clean_num(val):
-    if not val: return None
-    val = re.sub(r"[^0-9.\-]", "", str(val))
-    try:
-        return float(val)
-    except Exception:
+    """
+    Extracts and converts a numeric value from a string.
+    Handles:
+    - Commas (e.g., "9,070.26")
+    - Currency symbols (e.g., "USD", "$")
+    - Words in the string (e.g., "Invoice Total USD 9,070.26")
+    - Returns None if not found.
+    """
+    if val is None:
         return None
+    if isinstance(val, (int, float)):
+        return float(val)
+    # Look for the last valid number in the string
+    matches = re.findall(r"[-+]?\d[\d,]*\.?\d*", str(val))
+    if matches:
+        # Remove commas and convert to float
+        num = matches[-1].replace(",", "")
+        try:
+            return float(num)
+        except Exception:
+            return None
+    return None
+
 
 def normalize(s):
     if not s: return ""