25/96 means 25 divided by 96!
For example if the screen width were 80 inches...
substitute 80 for where the formulat says "width" so
((25/96* 80 - 12.5) * 4.99 + 70.28) * 0.977
Which means....
Take 25 and divide by 96
Multiply that result by 80 inches
Subtract 12.5 from that result
Multiply that result by 4.99
Add 70.28 to that result
Finally multiply that result by 0.977 to get the final result in inches.
* means multiply
/ means divide
+ means add
- means subtract
Do multiplication and division before additions and subtractions.
Items enclose in parentheses should be evaluated first.
The number system is base ten using digits written as 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
0 means no units
1 means this many /
2 means this many //
3 means this many ///
4 means this many ////
5 means this many /////
6 means this many //////
7 means this many ///////
8 means this many ////////
9 means this many /////////
If there are more than ///////// it is convenient to write it with more than one digit. Each digit further to the left represents a set of ten units. It is also convenient to represent yet larger groups with more digits each showing groups which are ten times the size of the previous digit.
Sometimes one must represent things less than one. Yes, it is possible for a number to be between none and one. Theses are represented using digits following a "." The first digit to the right of the "." means you take one and divide it into ten equal portions. The number of portions is represented by that first digit to the right of "." Yet smaller portions can be represented with additional digits to the right of the "." much as larger units can be represented with more digits to the left end of the number.