<HTML><BODY>> (denominator (rationalize (/ 23 10) 0.01)) 1125899906842624.0 > (denominator (/ 23 10)) 10From refernece for rationalize: Among the real numbers within (abs tolerance) of x, returns the one corresponding to an exact number whose denominator is the smallest. I expect to have 10 from (denominator (rationalize (/ 23 10) 0.01)) -- Roman Klochkov</BODY></HTML>