To calculate \( 3 \sqrt{7.143} \times 821.5 \div 0.0014 \), we can break it down step-by-step:
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Calculate \( \sqrt{7.143} \): \[ \sqrt{7.143} \approx 2.673 \]
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Multiply by 3: \[ 3 \times 2.673 \approx 8.019 \]
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Multiply by 821.5: \[ 8.019 \times 821.5 \approx 6583.64 \]
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Finally, divide by 0.0014: \[ 6583.64 \div 0.0014 \approx 4,698,300 \]
Thus, the result of \( 3 \sqrt{7.143} \times 821.5 \div 0.0014 \approx 4,698,300 \).