text: var ejs = require('ejs');
  var template = '<%=: price * 1.145 | round:2 %>';
  var context = {price: 21};
   
  ejs.filters.round = function(number, decimalPlaces) {
    number = isNaN(number) ? 0 : number;
    decimalPlaces = !decimalPlaces ? 0 : decimalPlaces;
    
    var multiple = Math.pow(10, decimalPlaces);
    return Math.round(number * multiple) / multiple;
  };
   
  console.log(ejs.render(template, context));
  