How is possible to specify a number of digits to show but that these are not rounding. I am using "format as decimal numbers"blocks, but it always round.

I would like to show he result of division 93/7 with 18 digits without rounding. The results is a periodic number as 13.285714285714285714=13.(285714) but if I put 18 digit in the block, the result is 13.285714285714286476 rounding from14th digit.

you found out yourself, that it is already rounding from the 14th digitâ€¦
the webviewer is also a Kodular componentâ€¦ just give it a try together with some JavaScriptâ€¦
here are some snippetsâ€¦ adjust it to your needsâ€¦