So she used \(\frac{5}{6}\) of the cord to make necklaces.
\(1- \frac{5}{6} = \frac{1}{6}\)
She splits the \(\frac{1}{6}\) length into 4 equal lengths.
To divide a fraction by a fraction, you multiply it by its reciprocal.
\(\frac{1}{6} ( \frac{1}{4})\)
\(=\frac{1}{24}\)
She used \(\frac{1}{24}\) of the original chord to make each bracelet.