quick binary / floating point help!

[riddler]

i need to answer these questions but showing working out...just cant remember the correct ways to work them out

if anyone could just answer one question i can do the rest using the formula you use!

Division

111011110 / 10010 = ? (i have the answer just no working out!)

Floating Point
(0.11*101)(0.1*11) = ?

 

[riddler]

bah, i really suck at maths let alone binary!