Basic Algorithm from Wiki https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
Rule
- Can increase or decrease grid size by smaller and bigger button.
- Can click cell of grid to create or kill life.
- Reset button will initial world.
give a x and return how many number from 1 to x contain 7 in it. EX : 17, 37, 71, 751, 777