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Uncle Li read a 32,000-word article and found four typos. How many countries have stipulated the error rate of this article?
1. The error rate of this paper is 4 ÷ 32000 = 1.25/10000 (ten thousandths1.25).

2. Periodical quality management regulations: if the error rate of editing and proofreading is not more than three ten thousandths, the quality of the periodical is qualified. The error rate exceeds three ten thousandths, and the quality is unqualified.

3. Book quality management regulations: Books with an error rate of no more than 1/10000 are qualified for editing and proofreading. Books with an error rate of more than one in ten thousand are not qualified for editing and proofreading.