Someone

menu * { 
  Calculator:/dialog -m Calc Calc
} 
dialog Calc { 
  title "Calculator" 
  size -1 -1 112 112 
  option dbu
  Tab "Calculator", 1, 0 0 112 112
  Box "Calculator:", 2, 0 17 110 110, tab 1
  Button "Backspace", 3, 5 37 50 16, flat tab 1
  Button "Clear", 4, 55 37 50 16, flat tab 1
  Edit "0.", 5, 7 25 97 10, autohs tab 1
  Button "7", 6, 20 55 14 14, flat tab 1
  Button "8", 7, 35 55 14 14, flat tab 1
  Button "9", 8, 50 55 14 14, flat tab 1
  Button "/", 9, 65 55 14 14, flat tab 1
  Button "4", 10, 20 69 14 14, flat tab 1
  Button "5", 11, 35 69 14 14, flat tab 1
  Button "6", 12, 50 69 14 14, flat tab 1
  Button "*", 13, 65 69 14 14, flat tab 1
  Button "1", 14, 20 83 14 14, flat tab 1
  Button "2", 15, 35 83 14 14, flat tab 1
  Button "3", 16, 50 83 14 14, flat tab 1
  Button "-", 17, 65 83 14 14, flat tab 1
  Button "=", 18, 80 55 14 54, flat tab 1
  Button "0", 19, 35 97 14 14, flat tab 1
  Button "+", 20, 50 97 14 14, flat tab 1,
}