How to add letters to Leaderboards?

So, I was messing around with leaderboards a little bit ago, and was going to add letters. Like if you had $1000, it would say $1k.

Here's the leaderboard, but I just don't know how I would add letters, could someone help?

game.Players.PlayerAdded:connect(function(player)
	local stats = Instance.new("Model")
	stats.Name = "leaderstats"
	stats.Parent = player
	
	local c = Instance.new("StringValue") -- I made it a stringvalue so I could add letters.
	c.Name = "Cash"
	c.Value = "0"
	c.Parent = stats
end)