# [Whitespace](https://web.archive.org/web/20150618184706/http://compsoc.dur.ac.uk/whitespace/tutorial.php), 91 bytes

 [S S S T N
 Push_1][S N
 S _Duplicate_1][S N
 S _Duplicate_1][T N
 T T _Read_STDIN_as_integer_(base)][T T T _Retrieve_base][S S S N
 _Push_0][T N
 T T _Read_STDIN_as_integer_(factorial)][N
 S S N
 _Create_Label_LOOP][S N
 S _Duplicate_base][S S S T N
 _Push_1][T S S T _Subtract][N
 T T S N
 _If_negative_jump_to_Label_PRINT_RESULT][S N
 S _Duplicate_base][S T S S T S N
 _Copy_0-based_2nd_(result)][T S S N
 _Multiply][S N
 T _Swap_top_two][S S S N
 _Push_0][T T T _Retrieve_factorial][T S S T _Subtract][N
 S N
 N
 _Jump_to_Label_LOOP][N
 S S S N
 _Create_Label_PRINT_RESULT][S N
 N
 _Discard_top][T N
 S T _Print_result_as_integer]

Letters `S` (space), `T` (tab), and `N` (new-line) added as highlighting only. 
`[..._some_action]` added as explanation only.

[Try it online](https://tio.run/##JYxRCoAwDEO/k1PkCGN6IZHB/BMUPH5tulLS5pH2m9c7nvs4R4QkUFQ2CFcSei2W4gBKsICNjFgqriu/ofOeaRCx98at/Q) (with raw spaces, tabs and new-lines only).

**Explanation in pseudo-code:**

 Integer result = 1
 Integer base = STDIN as integer
 Integer factorial = STDIN as integer
 Start LOOP:
 If(base <= 0):
 Call function PRINT_RESULT
 result = result * base
 base = base - factorial
 Go to next iteration of LOOP

 function PRINT_RESULT:
 Print result as integer to STDOUT