Speaking of inflation

Tonight, I was sorting through old bills--really old--like over 60 year old invoices and cancelled checks. Fuel oil, lumber, paint, furniture, taxes, insurance. Then I came across a cancelled check for a restaurant dated Sept. 11, 1961, our first anniversary. I remember it well. I was 8.5 months pregnant and could barely sit close enough to the table to eat. I was wearing my one nice outfit, a light brown 2 piece with a white fluffy blouse. But the check was for $7.00. I thought that couldn't be right, so I ran it through an inflation calculator (Federal Reserve). $7.00 in 1961 came to $70.04 in 2023, for 900.4% inflation. To double check I used a U.S. CPI inflation calculator, but it wouldn't do March 2023, so I had to use December 2022, which was $69.25.  Close enough.