It is not about Maths - that is true for all the careers out except for a Maths teacher or professor job.

So if you bank on your mathematical ability to pick a career - it is a misguided way of doing it.

Best way is to use your Bazi chart to figure out your elemental strengths and weakness before deciding on a lifelong journey to find out. At least the ancients knew what was better for them rather than using our school system to decide.