Find Sum of List Elements with reduce Method in Dart Lambda

void main() {
    var numbers = [5, 10, -4, 27, -8, 6, -2];

    var sum1 = numbers.reduce((value, element) => value + element);
    print("Sum 1: ${sum1}");

    var sum2 = numbers.where((number) => number > 0).reduce((value, element) => value + element);;
    print("Sum 2: ${sum2}");

}  

Sum 1: 34
Sum 2: 48