How to add decimal point with a specific digit on the LCD?

Using Arduino Microcontrollers
#1

Thd function lcd.print (0xFFFF, 10) shows 65535 on the LCD. Now, I wish add decimal point with
the second digit from the left (65535 -----> 65.535). How can I do it?

Why do I want to do it?
Say, I have a temperature sensor and I wish display the temp value on the LCD. The command (s):

binTemp = xxxxh*ADC's output + yyyyh;
lcd.print(binTemp, 10); // LCD shows: 2145 (say)

Now, I want to place decimal point to make it: 21.45.

#2