Lee currently earns $60,000 / 12 months = $<<60000/12=5000>>5,000 per month.
The engagement ring will cost him 2 * $5,000 = $<<2*5000=10000>>10,000.
This means that it will take Lee $10,000 / $1,000 = <<10000/1000=10>>10 months to save enough money before he can propose.
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