FYI the original information for the OP's Guardian web article is available to read in full here:
The monetary aspects are fully explained in both -
Transcripts: Ms Gail Furness opening words from Day 250 - 16 February 2017
and
Themes: Data Introduction
http://www.childabuseroyalcommission.gov.au/documents/case-studies/cs50/20170216-cs50-introduction-4-data-%281%29
For those that prefer to watch and listen rather than read - then please watch the below video (from 30 seconds in, ie: right at the start)