correct math for energy metering

[AlexLV]

Hi,

how correctly make math for my power meter device's data:

I receive 2 byte sighned integer 2083 kWh. But real is 208.3kWh. If I use value myltiplayer for modbus mapper I have only integer part - 208 kWh.

If I just divide 2083 /10 anyway I have only 208. 

So how correctly convert value to floating point to have integer and 2 digits after point for more accurate power metering data??

BR,

Alex