RECI:Calculates the reciprocal of a number with desired accuracy

Reciprocal calculation giving answer with as much decimal digits as is wished.

This function calculates the exact reciprocal of any number,with as much decimal digits as you wish.

Syntax:::::
reci(a,b)
where a is the number whose reciprocal is to be calculated and b is the max. no. of decimal digits you want in the answer