Arithmetic on today's supply, not a forecast. It assumes nothing about whether Gram (prev. Toncoin) could attract that much money.
A coin's market capitalisation is its price multiplied by the number of coins in circulation. Gram (prev. Toncoin) has 2,789,270,146 GRAM in circulation at $1.3660 each, which is $3.81B. Holding that supply still and putting Polkadot's $1.71B in its place gives $0.61399113 per GRAM.
Gram (prev. Toncoin) is already worth more than Polkadot. Moving to the smaller cap would take GRAM down to $0.61399113, which is 0.449x of what it trades at now.
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 GRAM at that level, which is the part that actually decides a price.
$0.61399113 per GRAM. That is Polkadot's current market capitalisation of $1.71B divided across the 2,789,270,146 GRAM in circulation.
0.449x. Gram (prev. Toncoin) trades at $1.3660 today and Polkadot's market cap is $1.71B against Gram (prev. Toncoin)'s $3.81B.
No. It is one division: Polkadot's market capitalisation spread over the supply of GRAM that exists today. It assumes nothing about whether Gram (prev. Toncoin) 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 $1.71B of market cap spread over more coins gives a lower price per coin. This uses the 2,789,270,146 GRAM in circulation now.