I trained a 348M model trained from scratch on 22.7B tokens that does 14 digit arithmetic [P]

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Hello this is my fifth small language model I've made and apart of my third series and it has been a lot of work but it payed off: **348M parameters, 22.7B tokens**, then fine-tuned into a math model that solves arithmetic by *showing the work* — column addition with carries, borrow chains, partial-product multiplication — rather than guessing at an answer. Last time I posted a 326M model trained on 10B tokens. This has about 2.3× the data, and the math side is WAY better than my previous two ma