Correctly compute time

app.py

@@ -163,9 +163,9 @@ def redraw(
 
     end = time.time()
     secondes = int(end - start)
-    minutes = secondes // 60
+    minutes = math.floor(secondes / 60)
     secondes = secondes - (minutes * 60)
-    hours = minutes // 60
+    hours = math.floor(minutes / 60)
     minutes = minutes - (hours * 60)
     return [
         output_image,