In the beginning, I’m sorry for my bad English.

I tried to create a new type of the Calcudoku puzzle: 5×5 "multiop" with "!".

This one should contain all of operations, which we know here (

**except negative numbers**, though it isn’t operation), + factorial.

Operations "+", "–", "×", ":", "^", "|" and "mod" work as usually; both "factorial" cages show

**result of multiplicated cells** (no sum).

For example: n! / 10 in 3-cells cage (in 5×5) >>> possible results: only 12 (120/10 = (2 × 3 × 4 × 5)/10; 72 is impossible);

thus combinations 1 × 3 × 4 and 2 × 2 × 3.

Note: Variables "a" and "b" can be different or identical; a, b ε N, of course.

Good luck for solving…