People who understand these things, why are prices so high now than before Biden?

I was just looking at things I've bought. Why is a McDonald's cheeseburger $3 instead of $1 it was before Biden? What caused it to triple in price? In only 2 years? And it's still on the "Dollar" menu. Why is milk $5 instead of $2 like it was? Why are houses $600,000 instead of $250,000? Why are used cars $15,000 instead of $6,000? Why are AA batteries $25 instead of $9? What has caused all these prices to go up so massively?

People who understand these things, why are prices so high now than before Biden?
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