Number systems (arithmetic)

Question

Number systems

Who is not difficult, help someone who is difficult;)
We have:
A = 111000
B = 111 It is
necessary to carry out arithmetic operations:
A + B
B-A
A * B
A / B
It is advisable to paint in detail in order to put these decisions in your head.

Answer 1

Binary number system . Look around, it looks like everything is painted.