$.$ Multiply the following binary numbers: $($a$){11}^{\text{'}}11($b$)$

${101}^{\text{'}}10($c$){110}^{\text{'}}101($d$)1011\text{'}1101($e$)1010\text{'}101$

Divide the following binary numbers: $($a$)110,10($b$)$

$10110,10($d$)101101,1\mathrm{.}1($e$)11001\mathrm{.}11,110$

$.$ Subtract the following binary numbers: $($a$)11-10$dots

$.....($b$)111-101....q,($c$)101011-{100101}_{?}$

$q,($d$)11100001-10011110$