var i = 0;

var outer = \n -> do
	var inner = \-> do
		i = i + n
	end
end

var by3 = outer(3)
var by5 = outer(5)

by3()
println(i) -- 3
by3()
println(i) -- 6
by5()
println(i) -- 11
by5()
println(i) -- 16
by3()
println(i) -- 19