4.47 × 10-8 written in regular notation is 0.0000000447
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447 is CDXLVII
447 = CDXLVII
four hundred and forty seven thousandths = 447/1000 = 0.447 = 4.47 x 10-1 In standard form
447 multiplied by 68 is 30,396
sqrt(447) = 21.142 (approx).