How do I add seed?

[feral marlin]

local step=25
local emptyThreshold=0.4
for x=-5000, 5000, step do
for z=-5000, 5000, step do
local noiseValue=math.noise(x0.0009, 0, z0.0009)
local randomChance=math.random()
if noiseValue<emptyThreshold and randomChance<0.7 then
local part=Instance.new("Part")
part.Size=Vector3.new(4.44, 0.156, 4.44)
part.Position=Vector3.new(x, 5, z)
part.Anchored=true
part.Parent=workspace
end
end
end

How do I add seed?

[inland raft]

To add seed instead of random being done thro math.random u do
Random.new(seed)