// 举例
var ourArr = [ 9, 10, 11, 12];
var ourTotal = 0;


for (var i = 0; i < ourArr.length; i++) {
ourTotal += ourArr[i];
}


// Setup
var myArr = [ 2, 3, 4, 5, 6];


// Only change code below this line
var total = 0;
for (var i = 0; i < myArr.length; i++) {
total += myArr[i];