screenshot    ( because the following doesn't show it very well )


> `:=`(st, time()); 1; for i from 6 by 2 to 10 do factorial(`+`(`*`(10000, `*`(i)))); print(i); `+`(time(), `-`(st)) end do; 1

11.904
15641377080260669224603198915279056622985628487960428861508048040920272776999028287524090241656492368986785912639731043870372058389624970388949529639130614831960685083471509926418963430265295323174392... 15641377080260669224603198915279056622985628487960428861508048040920272776999028287524090241656492368986785912639731043870372058389624970388949529639130614831960685083471509926418963430265295323174392...
15641377080260669224603198915279056622985628487960428861508048040920272776999028287524090241656492368986785912639731043870372058389624970388949529639130614831960685083471509926418963430265295323174392... 15641377080260669224603198915279056622985628487960428861508048040920272776999028287524090241656492368986785912639731043870372058389624970388949529639130614831960685083471509926418963430265295323174392...
6
.109
30977222516622492863982132799137542683675873445896438757521258292104785127475524253869026696941406639185548194393590675981717635448951754474336545885588962446052538423971651846907371166289831417947560... 30977222516622492863982132799137542683675873445896438757521258292104785127475524253869026696941406639185548194393590675981717635448951754474336545885588962446052538423971651846907371166289831417947560...
30977222516622492863982132799137542683675873445896438757521258292104785127475524253869026696941406639185548194393590675981717635448951754474336545885588962446052538423971651846907371166289831417947560... 30977222516622492863982132799137542683675873445896438757521258292104785127475524253869026696941406639185548194393590675981717635448951754474336545885588962446052538423971651846907371166289831417947560...
8
.156
28242294079603478742934215780245355184774949260912248505789180865429779509010630178725517714138311636107136117373619629514749961831239180227260734090938324220055569688667840380377379444961268380147875... 28242294079603478742934215780245355184774949260912248505789180865429779509010630178725517714138311636107136117373619629514749961831239180227260734090938324220055569688667840380377379444961268380147875...
28242294079603478742934215780245355184774949260912248505789180865429779509010630178725517714138311636107136117373619629514749961831239180227260734090938324220055569688667840380377379444961268380147875... 28242294079603478742934215780245355184774949260912248505789180865429779509010630178725517714138311636107136117373619629514749961831239180227260734090938324220055569688667840380377379444961268380147875...
10
.218
>


It should be noted that in document mode, the printing of results that occur within the loop are printed  after  the loop completes while in worksheet mode, the results are displayed  live  as the loop executes.

Also note that  fprint("%d",i)  or  printf("%d", i)  would produce same result.