\(\frac52 \, * \, c=8\frac13\)
Divide both sides of the equation by \(\frac52\)
\(\frac52 \, * \, c \, \div \, \frac52 = 8\frac13 \, \div \, \frac52 \\~\\ c = 8\frac13 \, \div \, \frac52\)
Now just simplify the right side of the equation.
\(c = \frac{25}3 \, \div \, \frac52 \\~\\ c = \frac{25}3 \,* \, \frac25 \\~\\ c=\frac{10}{3}\)