[tex]76 \dfrac{8}{10} \div 7[/tex]
[tex]= 76 \dfrac{4}{5} \div 7[/tex]
[tex]= \dfrac{384}{5} \div 7[/tex]
[tex]= \dfrac{384}{5} \times \dfrac{1}{7} [/tex]
[tex]= \dfrac{384}{35} [/tex]
[tex]\text {Answer: Each piece is }10\dfrac{34}{35} \text { long}[/tex]