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Well, not pure mathematics, but I am talking about mathematics in general. I want to be a physicist and that would require a lot of mathematics.
You could also be pretty much any type of engineer and make quite a hefty salary, most hard sciences have a lot of mathematics including Astronomy, Physics, Chemistry and Rocket Science. If you wanted to be an Astronaut you'd need quite a bit of mathematics (working with NASA)
If you wanted to make $150,000 a year first job, with experience making $400,000 a year, you could be an Actuary, though being Actuary requires some of the hardest mathematics in the world.