Its "binary" not binari.
For this problem you could do the division just like with the decimal numeral system.
1 : 1010 = 0|0001100110011001100110011
10
100
1000
10000
- 1010
-----
110
1100
- 1010
----
10
100
1000
10000
- 1010
-----
110... and so on
If you want to convert this back to the decimal system you have to sum the binary products with the exponent equal to its representing negativ position. So for example:
As we know: 1010 would be 1*2^3+0*2^2+1*2^1+0*2^0 = 10 (dec)
Our solution would be calculated like: 0|000110011001100110011... = 0*2^(-1)+0*2^(-2)+0*2^(-3)+1*2^(-4)+1*2^(-5)+0*2^(-6)...
+104 
