Delta Math

3 calculations are:
- Calculate from top to left bottom *1
- Calculate from left bottom to right bottom *2
- Calculate from right bottom to top *3

When result of *1 = *2 = *3, it is passed then move to next game.

There are two shapes:
-circle field: "0" - "9" or "-"
-rectangle field: "+" or "-" or "x" or "/"

Can't change Gray color field. This is fixed for this game.
Can change/set Blue color field and it will be changed to green when it is selected.
Then number or "+" etc... will be inputted to green field.

When 3 calculations are same result, you will see your points.
Push "next game" to continue a game (points will be added in current points).

When timer is expired, push "next game" to go back to an initial view for a new game (points will be from 0).

Add below features at Ver 1.1
Remained time will be a points
Keep the records of past top5 and show them.
Clear the records