Source google image: https://get.pxhere.com/photo/number-pattern-toy-font-piece-puzzle-insert-demarcation-exact-fit-last-element-last-particles-752901.jpg
Puzzle fit
Source google image: https://get.pxhere.com/photo/number-pattern-toy-font-piece-puzzle-insert-demarcation-exact-fit-last-element-last-particles-752901.jpg