let xStep = 70;

let yStep = 60;

​

function setup() {

  createCanvas(700, 700);

  background(230);

  fill("red");

  ellipse()

​

  let yPos = 0;

  let xPos = 0;

​

  for (yPos = 30; yPos < height; yPos=yPos + yStep) {

    for (xPos = 20; xPos<width; xPos=xPos + xStep) {

      circle(xPos,yPos, 5);

    }

  }

}

​