The number of machine breakdowns per day at Yuwen Chen’s factory is 0, 1, or 2, with probabilities 0.5, 0.3, or 0.2, respectively. The following random numbers have been generated: 13, 14, 02, 18, 31, 19, 32, 85, 31, and 94. Use these numbers to generate the number of breakdowns for 10 consecutive days. What proportion of these days had at least one breakdown?
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