Do the following number conversions assuming two$$s complement representation is used for the binary numbers. Show your work.

a$.-2810=\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_2$

b$.111100112=\_\_\_\_\_\_\_\_\_\_10$

c$.000110112=\_\_\_\_\_\_\_\_\_\_10$

d$.10000011111010102=\_\_\_\_\_\_\_\_\_\_\_\_16$