diff --git a/Boost-datetime-Examples-Translated.md b/Boost-datetime-Examples-Translated.md
index 79929cf..7299d79 100644
--- a/Boost-datetime-Examples-Translated.md
+++ b/Boost-datetime-Examples-Translated.md
@@ -342,27 +342,27 @@ main()
 ```
 <a name="Time_Math"></a>
 ### Time Math
+```c++
+#include "date.h"
+#include <iostream>
 
-    #include "date.h"
-    #include <iostream>
-
-    int
-    main()
-    {
-        using namespace std::chrono;
-        using namespace date;
-
-        auto d = sys_days(2002_y/feb/1);  // an arbitrary date;
-        // construct a time by adding up some durations durations
-        auto t1 = d + 5h + 4min + 2s + 1ms;
-        // construct a new time by subtracting some times
-        auto t2 = t1 - 5h - 4min - 2s - 1ms;
-        // construct a duration by taking the difference between times
-        auto td = t2 - t1;
-        std::cout << t2 << " - " << t1 << " = " << make_time(td) << '\n';
-        // 2002-02-01 00:00:00.000 - 2002-02-01 05:04:02.001 = -05:04:02.001
-    }
+int
+main()
+{
+    using namespace std::chrono;
+    using namespace date;
 
+    auto d = sys_days{2002_y/feb/1};  // an arbitrary date;
+    // construct a time by adding up some durations durations
+    auto t1 = d + 5h + 4min + 2s + 1ms;
+    // construct a new time by subtracting some times
+    auto t2 = t1 - 5h - 4min - 2s - 1ms;
+    // construct a duration by taking the difference between times
+    auto td = t2 - t1;
+    std::cout << t2 << " - " << t1 << " = " << format("%T\n", td);
+    // 2002-02-01 00:00:00.000 - 2002-02-01 05:04:02.001 = -05:04:02.001
+}
+```
 <a name="Print_Hours"></a>
 ### Print Hours