The hexadecimal number system is a type of number system, that has a base value equal to 16. It is also pronounced sometimes as ‘hex’. Hexadecimal numbers are represented by only 16 symbols. These symbols or values are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F.

D1CE = 13.1.12.14 = 13*16^3 + 1*16^2 + 12*16^1 + 14*16^0 = 23248 + 256 + 192 + 14 = 53710

2E6.A3 = 2*16^2 + 14*16^1 + 6*16^0 + 10*16^{-1} + 3*16^{-2} = 742.63671879

A2F7 = 10.2.15.7  = 10*16^3 + 2*16^2 + 15*16^1 + 7*16^0 = 40960 + 512 + 240 + 7 = 41719