[SNMP4J] HP LaserJet usage-printer-total-charge

[Константин Лохтин]

I send SNMP reqest to HP LaserJet 3005 with MIB 
"usage-printer-total-charge" (1.3.6.1.4.1.11.2.3.9.4.2.1.1.16.1.2.0) and 
get the following response:
======================
1.3.6.1.4.1.11.2.3.9.4.2.1.1.16.1.2.0 = 47:9b:54:00
======================
Printer WEB interface shows me total count of printed pages = 79528.
Can anybody tell me how 47:9b:54:00 corresponds with 79528 ?
I tried any binary representations, forward and backward. I tried ASCII 
codes. But I cannot find any connection!