Mining Turtle Multi Quarry

print("QuarryTurtle")
print("by Muzze77")
print("Wie viele Schritte sollen gegangen werden?")
schritte = io.read()
warten = 200

function place()
shell.run("clear")
turtle.select(5)
turtle.turnRight()
turtle.place()
sleep(0.5)
turtle.select(6)
sleep(0.5)
turtle.up()
turtle.placeDown()
sleep(0.5)
turtle.select(7)
sleep(0.5)
turtle.place()
turtle.up()
sleep(0.5)
turtle.select(8)
sleep(0.5)
turtle.placeDown()
sleep(1)
turtle.select(1)

end

  function cut()
  turtle.select(8)
  sleep(0.5)
  turtle.digDown()
  turtle.down()
  sleep(0.5)
  turtle.select(7)
  turtle.dig()
  sleep(0.5)
  turtle.select(6)
  turtle.digDown()
  turtle.down()
  sleep(0.5)
  turtle.select(5)
  turtle.dig()
  turle.turnRight()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()

end

while true do
 while schritte ~= 0 do
  turtle.select(16)
  shell.run("refuel 4")
  turtle.select(1)
  place()
while warten ~= 0 do
shell.run("clear")
sleep(0.1)
print("noch " .. warten .. " Sec warten")
sleep(0.9)
warten = warten - 1
end
  cut()
schritte = schritte - 1
warten = 400
 end

end