[tex] \sqrt[14]{6.3} [/tex]need help showing my son how to solve this problem. explanation is key.

Divide 6.3 meters of leather
between 14
Then
6.3 meters= 630 cm
Now divide
630/14 =
Find m,c,d (max common divisor), between 63 and 14. Its 7.
divide by 7, both numerator and denominator
90/2 = 45
Then answer is , each piece is 45 cm long