Blast Furnace Supplier

chest=peripheral.wrap("left")
blastdir="east"

while true do
    os.pullEvent("redstone")
    if rs.getInput("top") then
        local inventory=chest.getAllStacks()
        local irontotal=0
        local ironloc={}
        for i,j in pairs(inventory) do
            if j.name=="Iron Ingot" then
                irontotal=irontotal+j.qty
                ironloc[#ironloc+1]=i
            end
        end
            local pushIron=math.floor(irontotal/9)
            local ironKey=1
            for i=1,9 do
                toPush=pushIron
                while toPush>0 do
                    toPush=toPush-chest.pushItem(blastdir,ironloc(ironKey),toPush,11-i)
                    ironKey=ironKey+1
                end
            end

    end
end