Example: Inserting operators between digits so that the result is 10.
1 2 5 5
There are given 4 digits from 1 to 9. The task is to fill in numerical operators (+, −, ×, ÷, √ and !) so that the result of the created expression is 10.
However, the program has more options. It is possible to change the number of entered digits, allowed operations and result. Finding a solution for higher number of digits may take a very long time. If you don't want to find all solutions, but only a limited number, check Find the first X solutions, it'll be faster.
There may be no solution for a given input.