Rajdhani / Yamuna Power [Bses] — sub meter reading process

Address: New Delhi, Delhi

We have sub meter installed in our flat and rate charged by landlord is rs 10/unit. However while reading meter landlord is calculating first digit from right as unit place which should be decimal place according to me.
So i want to know correct way of reading the sub meter.
Also, please provide information regarding how to read meter on bill given by bses.
Thank you