Here is a link that shows “lattice multiplication” step-by-step. This is helpful to those of you (me included!) who learned to do multipliation “the old fashioned way.”

lattice multiplication: https://www.learnnc.org/lp/pages/4458

Long division lesson and practice: https://www.wallkillcsd.k12.ny.us/education/components/links/links.php?sectiondetailid=122216