We need to work out the gradient first.
Always assume an engine out in performance
The weight in Newtons is 750000
SinTHETA = T-D/W
= 600000-553000/750000
= 0.0626
ROC = SIN THETA TAS

= 0.0626 x 202

= 12.66 kts

1 kt = 100ft/min therefore ROC = 1266ft/min.