text: module.exports = function zeros(expression) {
  	let arr = expression.split('*');
  	let pair={};
  
  	for (let i = 0; i < arr.length; i++) {
  
  		if (arr[i].slice(-2) == '!!') {
  			pair[arr[i] + '(' + i + ')'] = 2;
      }
      
      else {
      pair[arr[i] + '(' + i + ')'] = 1;
      }
      
    };
  
  	let Couter2 = 0;
  	let Counter5 = 0;
  
  	for (elem in pair) {
  
  		for (let i = parseInt(elem); i > 0; i -= pair[elem]) {
  
  			for (let j = i; j % 2 == 0; j /= 2) {
  				Couter2 += 1;
        };
        
  			for (let k = i; k % 5 == 0; k /= 5) {
  				Counter5 += 1;
  			};
  		};
  	};
  	return Math.min(Couter2,Counter5);
  };
  