Tokyo Olympics cost $15.4 billion. What else could that buy?

In this July 23 photo, fireworks illuminate over the National Stadium during the opening ceremony of the 2020 Summer Olympics in Tokyo. (AP Photo/Shuji Kajiyama, File)

TOKYO — The official price tag for the Tokyo Olympics in $15.4 billion, which a University of Oxford study says is the most expensive on record. What else could those billions buy?