An inverted T-shaped concrete beam (B
1) in the figure, with centroidal axis X - X, is subjected to an effective prestressing force of 1000 kN acting at the bottom kern point of the beam cross-section. Also consider an identical concrete beam (B
2) with the same grade of concrete but without any prestressing force.
![An inverted T-shaped concrete beam](https://images.collegedunia.com/public/qa/images/content/2024_07_08/Screenshot_ec0e18371720421773577.png)
The additional cracking moment (in kN. m) that can be carried by beam B
1 in comparison to beam B
2 is _____ (rounded off to the nearest integer).