https://binary2hex.com/allsystem.html
Addition, multiplication and division of numbers in different number systems
Enter two numbers and specify their base of the number system:
+
-
*
÷
-
1
1
0
1
1
1
0
1
1
1
0
0
0
0
the Final answer: 11011
2
- 1011
2
= 10000
2