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  1. $1 \ast 22 + 1 \ast 21 + 0 \ast 20 + 1 \ast 2^{-1} + 0 \ast 2^{-2} + 1 \ast 2^{-3} = 6.625$
  2. $1118 \mod 16 = 14,$ quotient $= 69$

$\qquad 69 \mod 16 = 5,$ quotient $= 4$

$\qquad 4 \mod 16 = 4.$

Writing the mods in the reverse order (in hex) gives $(45E)_{H}.$

Both can be done using a calculator also.

 

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