Sum objects from array in JavaScript (JS)

Question

I want to sum expense but i dont know how, can somebody explain

for (let i = 0; i < ExpensesList.length; i++) {
    const expense = Number(ExpensesList[i][2])
    console.log(expense);
}

ExpenseList:

0: ["First expense", "2022-02-05", "51"]
1: ["Second expense", "2022-02-05", "5"] 
2: ["Third expense", "2022-02-12", "213"]

In console.log i have 51, 5, 213 sum of this is 269 but i dont know how to add that to each other