Salt input and bruteforcing

[Tv0robushek]

Hello, i'm new to the hashcat and just got stucked of don't knowing how to realise it: so i have md5 hash, which i want to decrypt. I know exactly, what the decryption text would be minimum 27 length and maximum 28, using only numbers 0 to 9 and i know salt. 

The text would be like this: salt(8 numbers).number(1 to 9).1234567890876543(16 numbers 0 to 9); For each hash salt is different. Can i input salt every time i input new hash, so the program won't guess salt numbers? For example, i got salt: 49342465, so in program it would be: 49342465(input)+'.'+number(1 to 9)+'.'+numbers(16 max, 0 to 9) 

I can't do it like it said in manual 'salt+hash', because it has integer length mask error and meaningless. (-d1 -a 3 -m 20 -1 . new.hash ?d?d?d?d?d?d?d?d?1?d?d?1?d?d?d?d?d?d?d?d?d?d?d?d?d?d?d?d using brute-force with mask, where ?1 is '.')

[undeath]

is the "number(1 to 9).1234567890876543" part fixed? If so you should add it to the salt. You don't need to define ?1 for a single character. You can simply use that character in the mask.

[Tv0robushek]

No, it's not. It's random generated second salt, i guess. Maybe it has some of consistent pattern, but i still didn't found it.
I consider, that it's seems to be impossible to crack this.. Maybe it's better to use rule based attack?

[atom]

It all goes down to the unknown parts. If they just numbers length 16 is feasible.