What is 12 divided by 2/3 and why? Please help

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Draw a scaled copy of the circle using a scale factor of 2