please help me get the correct answers for 1,3,4

1. Convert the following decimal fractions to binary with a maximum of six places to the right of the binary point: a) 25.84375 b) 57.55 2. Colvert the following binary fractions to decimal: a) 10111,110 b) 100011.10011 3. Convert the hexadecimal number (7A01)16 to binary. 4. Represent the following decimal numbers in binary using 8-bit signed magnitude, one's complement, and two's complement. a) 60 b) 60 c) 20 d) 20