Charmion wrote: I don’t know what that is in the other money

I learned this between 55 and 60 years ago so it might have got a bit twisted since then but I seem to remember -32 x5 /9.

400-32= 368

368/9 = 40.9

40.9 x 5 = 204

call it 200 C

Off topic reference to another thread but this is a result of a Grammar school education.