What does this Assembly snippet output?

1.global _main
2.align 2
3_main:
4    stp x29, x30, [sp, #-32]!
5    mov w8, #1
6    mov w9, #5
7loop:
8    cbz w9, done
9    mul w8, w8, w9
10    sub w9, w9, #1
11    b loop
12done:
13    sub sp, sp, #16
14    str x8, [sp]
15    adrp x0, fmt@PAGE
16    add x0, x0, fmt@PAGEOFF
17    bl _printf
18    add sp, sp, #16
19    ldp x29, x30, [sp], #32
20    mov w0, #0
21    ret
22.section __TEXT,__cstring
23fmt: .asciz "%d\n"