Please show all steps

Exercise 2 ( 5 marks) The production of alum involves a good mixing tank. The concentration of aluminum CA in a laboratory alum process that uses a CSTR is given as a function of time by dCAI/dt=37.53.5CAII At the initial time, t=0, the alum concentration in the tank is 50g/L. Use Runge-Kutta fourth order method and a step size of, h=1.0 minute, what is the aluminum concentration after 3 minutes? Show all your steps the solution must be close to 11.455g/L