4 *√28/ 3 *√7 / 3√7 [cube root 7]

Assuming your question as, 4283773=42837×173=43×287×173=43×4×173=83×173=8373

4 √28/ 3 √7 / ₃√7 [cube root 7]

A s s u m i n g y o u r q u e s t i o n a s, \frac{\frac{4 \sqrt{28}}{3 \sqrt{7}}}{\sqrt[3]{7}} = \frac{4 \sqrt{28}}{3 \sqrt{7}} \times \frac{1}{\sqrt[3]{7}} = \frac{4}{3} \times \sqrt{\frac{28}{7}} \times \frac{1}{\sqrt[3]{7}} = \frac{4}{3} \times \sqrt{4} \times \frac{1}{\sqrt[3]{7}} = \frac{8}{3} \times \frac{1}{\sqrt[3]{7}} = \frac{8}{3 \sqrt[3]{7}}