Servant Planner Question

Since this isn't really clear on The Servant Planner, I might as well ask. When you try to plan a servant out you get two numbers in regards to what they need for Exp Cards. one with an x in front of it, and one in ().

Example: An SSR going from level 1 to 90 has x375 (450)

Is the 375 if you get Great Successes? If you use Any Blaze of Wisdoms/Matching Class Blazes? Something else? Is the one in () The 'Average' you'll need? The max if you use Blazes that don't match up class wise? A different 'Something else'?

Also, if possible, I'd like to recommend that somewhere on the page for the calculator the answer to this be added, since I doubt that I'm the only one not sure about this.