I didn't understand this code the result is 0 but I didn't understand the algorithm

Question

var arr =[];
var x= 80 % 70;
var y= 0;
for (i=0;i<x;i++);
if(i%3===0)
y=arr.push(i);
console.log(y)

Answer 1

% sign mean mode
X will be 10 value
After for loop; that means loop work for empty statement.
If (10%3===0)
This condition become false
So Y remain zero.

Answer 2

And what does it mean push and arr

Answer 3

This line will not execute.
this line means add y value to array

Answer 4

And the array it 0 so y equal 0 also

Answer 5

Console.log Display y value.
Var y=0
Set y mean 0

Answer 6

Thank you