calculează: [(964×12+36×12)÷100+72×6]÷24-(12696÷24-2×253)= ;

[(6027÷21-1480÷40)÷25×(48×45÷15)]÷24= ;

[6×10×100-(25×4-40)×5]-(10×10×7+120÷3×35)= ;

[12×44+(750+450÷6+27÷9)÷6]÷2+4= ;

[12×33+4×(950-250×3+4)]÷3+47×13=​