How to manipulate numbers in array with for loop in JS

I have a array:

let numbers = [5, 10, 15, 25, 30];

I want to increment them all by one using a for loop. The result should be 6, 11, 16, 26 and 31.

But I can do this:

let numbers = [5, 10, 15, 25, 30];

for (let i = 0; i < numbers.length; i++)
  console.log(numbers + 1);

>Solution :

let numbers = [5, 10, 15, 25, 30]; 

for (let i = 0; i < numbers.length; i++) {
  numbers[i]++
}