CALCULATOR & EXPRESSION EVALUATOR V0.25	> MathWorld - Engineering Handbook - Unit Converter
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		tan(π/2)/1E280  =	-1.46191629443E+20 …		[1]
Wrong!

1	2	3	+	y x	sin	asin	exp	ans	,
4	5	6	−	√	cos	acos	ln	fact	(
7	8	9	×	π	tan	atan	log(a,b)	rand	)
.	0	E	∕	e	deg	rad	mod(a,b)	dice	CLR