Обработайте аккуратнее, пожалуйста:
```
java ru.fizteh.fivt.students.dsalnikov.calculator.Calculator 9999999999999999999
Exception in thread "main" java.lang.NumberFormatException: For input string: "9999999999999999999"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:495)
	at ru.fizteh.fivt.students.dsalnikov.calculator.Calculator.getNumber(Calculator.java:69)
	at ru.fizteh.fivt.students.dsalnikov.calculator.Calculator.main(Calculator.java:108)
```