Where is the problem?

Tell us what’s happening:
I have no idea what I’m missing and none of the other posts seem to help. Any ideas would be much appreciated.

Your code so far


function multiplyAll(arr) {
  var product = 1;
  // Only change code below this line
  for (var i = 0; i < arr.length; i++){
    for (var j = 0; i < arr[i].length; j++){
      product *= arr[i][j];
    }
  }
  // Only change code above this line
  return product;
}

// Modify values below to test your code
multiplyAll([[1,2],[3,4],[5,6,7]]);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36.

Link to the challenge:

I knew there had to be something simple like that I was missing. Thanks!