Demonhorde Spell cost question

[redner]

I've searched the forum and FAQ. I'm still confused.

Demonhorde Spell:
Summon 125 150-point Deamons, Any Lesser Demon (+1/4), Friendly (+1/4) (97 Active points)

My understanding is that it costs 45 Character Points for ONE summoned demon. Question: how do you get 52 more Character Points to summon the other 124 demons?

I hate to say it, but I can't comprehend "2x number of Summoned beings for +5 Character Points". Can you express this in an equation?

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Thanks

[Steve Long]

Summon one 150-point demon: 30 points
+125 demons: +35 points (see the handy table on 5ER 577 if you want a step-by-step breakdown)

That's 65 points. With a total of +1/2 worth of Advantages, the final Active Point cost is 97 points.