```
Exception in thread "main" java.util.EmptyStackException
	at java.util.Stack.peek(Stack.java:102)
	at java.util.Stack.pop(Stack.java:84)
	at ru.fizteh.fivt.students.baldindima.calc.Calculater_1.calculater(Calculater_1.java:114)
	at ru.fizteh.fivt.students.baldindima.calc.Calculater_1.main(Calculater_1.java:124)
```