`A=\frac{16^3. 3^10+ 120. 6^9}{4^6. 3^12+ 6^11}`
`A=\frac{(2^4)^3. 3^10+ 2^3. 3. 5. (2.3)^9}{(2^2)^6. 3^12+ (2.3)^11}`
`A=\frac{ 2^12. 3^10+ 2^12. 3^10. 5 }{ 2^12. 3^12+ 2^11. 3^11 }``
`A=\frac{ 2^11. 2. 3^10+ 2^11. 2. 3^10. 5}{ 2^11. 2. 3^10. 3^2+ 2^11. 3^11 }`
`A=\frac{2^11. 3^10. (2+2.5)}{2^11. 3^10.(2.3^2+3)}`
`A=(2+10)/(18+3)`
`A=12/21`
`A=4/7`
