def ftd(n, d):        intPart=n/d        remain=(n%d)*10        decPart=[ ]        dix={ }        i=0        while True:            dec=remain/d            remain=remain%d            decPart+=dec,            if remain==0:                break            if remain in dix:                decPart.insert( dix[remain]+1, '(')                decPart+=')'                break            dix[remain]=i            i+=1            remain*=10        return str(intPart)+'.'+''.join(map(str, decPart))