Arithmetic on today's supply, not a forecast. It assumes nothing about whether Cardano could attract that much money.
A coin's market capitalisation is its price multiplied by the number of coins in circulation. Cardano has 36,665,922,016 ADA in circulation at $0.2078 each, which is $7.62B. Holding that supply still and putting Zcash's $19.29B in its place gives $0.52606838 per ADA.
A 2.53x move is modest, and a coin this far down the table reaching the one above it is the ordinary shape of a cycle, not an outlier.
Supply is held still, and in practice it moves: coins are minted, burned and unlocked, and every one of those changes the price a given market capitalisation implies. The figure also says nothing about whether the money exists to buy ADA at that level, which is the part that actually decides a price.
$0.52606838 per ADA. That is Zcash's current market capitalisation of $19.29B divided across the 36,665,922,016 ADA in circulation.
2.53x. Cardano trades at $0.2078 today and Zcash's market cap is $19.29B against Cardano's $7.62B.
No. It is one division: Zcash's market capitalisation spread over the supply of ADA that exists today. It assumes nothing about whether Cardano could attract that much money, and it holds the supply still when in practice supply changes.
It sets it. Market cap is price times circulating supply, so the same $19.29B of market cap spread over more coins gives a lower price per coin. This uses the 36,665,922,016 ADA in circulation now.