Calculating sum of repeated elements in AngularJS ng-repeat

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In Template

<td>Total: {{ getTotal() }}</td>

In Controller

$scope.getTotal = function(){
    var total = 0;
    for(var i = 0; i < $scope.cart.products.length; i++){
        var product = $scope.cart.products[i];
        total += (product.price * product.quantity);
    }
    return total;
}

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