'use strict';
(function(stdin) {
  var lines  = stdin.toString().split('\n');
  var result = (function(data) {
  	var Calc = {
  		'+':function(a,b){return a + b;}
  		,'-':function(a,b){return a - b;}
  		,'*':function(a,b){return a * b;}
  		,'/':function(a,b){return a / b;}
  	};
  	var result = [];
  	var tmp;
  	var index = 0;
  	while (true) {
  		tmp = data[index++].split(' ');
  		if (tmp[1] === '?') break;
  		result.push(Calc[tmp[1]](parseInt(tmp[0],10),parseInt(tmp[2],10)));
  	}
  	return result.join('\n');
  }(lines
  ));
  console.log(result);
}(require('fs').readFileSync('/dev/stdin', 'utf8')));