AnalogRead+mapping ans decimal.

masavee:
i no understand this analog Read functino good i have code analogRead A0 and then i mapping this to 0,1023 to 2-14 (ph value)
and potentiometer move come ok, o-1023 is 2-14 this is ok, but how i change value ?
now out come serial monitor full number only one decimal, mean out come only 2-14.
but how change code come out 2,1 or 5,3 or 12,6 one decimal more ?

some say to me other forum use float but i no understand all float anythink, i no need calculate this other numbers i need only this map to 2-14 and more decimal. how ?

sorry my bad englsih but finnis local section this forum no have help, and others net no have finnish language help, englsih not have good for me.