diff --git a/checker.py b/checker.py
index 9393737..640f187 100644
--- a/checker.py
+++ b/checker.py
@@ -138,7 +138,10 @@ def format_number(number_str):
     try:
         number = int(number_str)
         if number >= 1000:
-            return f"{number//1000}k"
+            value_in_k = number / 1000.0
+            # Format to 3 decimal places if needed, remove trailing zeros and potentially the dot
+            formatted_num = f"{value_in_k:.3f}".rstrip('0').rstrip('.')
+            return f"{formatted_num}k"
         return str(number)
     except (ValueError, TypeError):
         return "NaN" # Or some other indicator of invalid input