I need help with these problems. Please show me the work. Please do it in a simple way so that I can understand the solution.

Ex. from decimal to octal you don't need to show me decimal to binary or else.

Thank you

8. Convert the decimal number 955 to octal. 9. Convert the hexadecimal number CD8 to octal. 10. Convert the octal number 561 to binary. 11. Convert the decimal number 1073 to binary. 12. Convert the hexadecimal number E4C to binary