Consider the following solutions that are combined in the following steps:

Step 1: Initial solution contains 200.0 mL of 0.150 M Ca(OH)₂

Step 2: 100.0 mL of 0.150 M AgClO₄ is added to the solution

Step 3: 100.0 mL of 0.150 M H₂CO₃ is added to the solution

Step 4: 400.0 mL of 0.150 M CH₃NH₂ is added to the solution

Provide the reaction equation that takes place in each step then determine the concentrations of Ca²⁺, OH^–, Ag⁺, ClO₄^–, CH₃NH₂, and CH₃NH₃⁺ in the final solution considering each reaction goes to completion.