The function convert(n, decimal, b) converts a base b number where b is an integer from 2 through 36) to a decimal number.  If n is a symbol or a string, it is assumed to be in the form of a either an integer or a floating-point number. The letters a (or A) through z (or Z) represent the digit values $10$ through $35$, respectively. The digits used are not required to be less than the base, so 38B base 4 is equivalent to 1123 base 4, each being converted to the decimal value $91$.

The keywords binary, octal, hexadecimal, and hex represent bases $2$, $8$, $16$, and $16$, respectively.

$\mathrm{convert}\left(101\,\mathrm{decimal}\,\mathrm{binary}\right)$

$5$

$\mathrm{convert}\left(-23\,\mathrm{decimal}\,\mathrm{octal}\right)$

$\mathrm{-19}$

$\mathrm{convert}\left(''1A.C''\,\mathrm{decimal}\,\mathrm{hex}\right)$

$26.75000000$

$\mathrm{convert}\left(''F39GA.CLH''\,\mathrm{decimal}\,24\right)$

$5.023690538\times {10}^6$

$\mathrm{convert}\left(''HELLO.WORLD''\,\mathrm{decimal}\,36\right)$

$2.923465291\times {10}^7$