pybench prep_times calculation error (closes #11895)
diff --git a/Tools/pybench/pybench.py b/Tools/pybench/pybench.py
index bee0e56..9f1e2e4 100755
--- a/Tools/pybench/pybench.py
+++ b/Tools/pybench/pybench.py
@@ -276,7 +276,7 @@
             for i in calibration_loops:
                 pass
             t = timer() - t
-            prep_times.append(t)
+            prep_times.append(t / CALIBRATION_LOOPS)
         min_prep_time = min(prep_times)
         if _debug:
             print()