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Number theory Difficulty 1.0 Junior Find the answer Canada

A number is placed in the box to make the following statement true: $8 + \frac{7}{\square} + \frac{3}{1000} = 8.073$ . What is this number?

(A) $1000$ (B) $100$ (C) $1$ (D) $10$ (E) $70$

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.