https://binary2hex.com/allsystem.html?id=4880

Multiply 01111111(2) on 00000101(2) = 000001001111011 Column

Enter two numbers and specify their base of the number system:
x01111111
00000101
+01111111
00000000
01111111
00000000
00000000
00000000
00000000
00000000
000001001111011
the Final answer: 011111112 * 000001012 = 0000010011110112