hope ur well , inshallah,
maths =teacher,
chemistry= pharmacy, chemist, chemical engineer..like everyone says, one of my lecturer says you make alot money doing that!!
IT= almost everything, everything involves IT,

i did chemistry, at alevels- challenging, but worthwhile, i m now doing IT at uni, May Allah SWT help inshallah.
I hope Allah SWT Helps you inshallah wid ur career. Ameen. May he help us all excel in our chosen fields inshallah.Ameen.
Good luck!!!