The simplified value of :

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= 1 +	10
	101

=	101 + 10	=	111
	101		101

Again,

= 1 −	10
	101

=	101 − 10	=	91
	101		101

∴ Expression
= (a² − b²) ÷ ab
= {(a + b) (a – b)} ÷ ab

=		111	+	91				111	−	91			÷		111	×	91
		101		101				101		101					101		101

=	202	×	20	×	101 × 101
	101		101		111 × 91