@helenpugh
Following links may be useful

http://etheses.dur.ac.uk/1669/1/1669.pdf
https://en.wikipedia.org/wiki/Susan_Hibbert
https://www.alamy.com/ats-in-berlin-a-group-of-british-ats-girls-serving-at-the-big-three-conference-sight-seeing-in-berlin-behind-them-can-be-seen-one-of-the-many-devastated-building-in-the-german-capital-a-number-of-ats-girls-took-a-few-hours-off-from-their-duties-at-the-potsdam-big-three-conference-to-see-the-sights-of-berlin-august-6-1945-image463560052.html

@lanodan @pms @bsdphk @Natasha_Jay In Indian Subcontinent , we use Lakh, Crore instead of millions and billions. So instead of 1,000,000,000.00, we write 100,00,00,000.00
https://en.wikipedia.org/wiki/Indian_numbering_system