after you chose the part of the photo that you want to divide; crop the photo again but this time make the crop ratio to 321
once you change the crop ratio, it's time to crop the photo, put the crop thingy or the box thingy on the edge of photo then press the check mark and it should look like this
just do the same step but do you still remember when i said that you need to save the photo that you resize? just use that photo so it will be easy to crop the other part of the picture.
now, try it. hope this tweet helps you
