The number of trains and their corresponding speeds for a curved Broad Gauge section with 437 m radius, are 20 trains travel at a speed of 40 km/hr, 15 trains travel at a speed of 50 km/hr, 12 trains travel at a speed of 60 km/hr, 8 trains travel at a speed of 70 km/hr, and 3 trains travel at a speed of 80 km/hr.
If the gauge (center-to-center distance between the rail heads) is taken as 1750 mm, the required equilibrium cant (in mm) will be _______. (rounded off to the nearest integer).