${10}^{2} \times \left( 9+12-8 \right)\div4$
Calculate the sum or difference${10}^{2} \times 13\div4$
Write the division as a fraction$\frac{ {10}^{2} \times 13 }{ 4 }$
Evaluate the power$\frac{ 100 \times 13 }{ 4 }$
Cancel out the common factor $4$$25 \times 13$
Multiply the numbers$325$