RM450 gone already...... T.T

WTF!!! I remember I got bring my graphic calculator back home after the calculus topic test, then as usual I will bring my graphic calculator to college everyday. After EALD class I put my bag in the library then straight away return the reply form of the scholarship to SSC. Then when I go back home I cannot find my graphic calculator in my bag. Zzz...... most probably is someone steal it in the library...... Library is a very dangerous place...... even got CCTV also no use. Haiz......