Answer:
[tex]753491[/tex]
Step-by-step explanation:
1) Subtract 78 + 13 to 91.
[tex] {91}^{3} - 8 \times 10[/tex]
2) Simplify 91³ to 753571.
[tex]753571 - 8 \times 10[/tex]
3) Simplify 8 × 10 to 80.
[tex]753571 - 80[/tex]
4) Simplify.
[tex]753491[/tex]
Therefor, the answer is 753491.