2. Multiply each bit by its corresponding power of 2 and add all the terms up.
1000 0110 1010 1000 1010 1000 0110 0100 0110 0110 1111 0110 1100 1000 1100 1000(2) =
(1 × 263 + 0 × 262 + 0 × 261 + 0 × 260 + 0 × 259 + 1 × 258 + 1 × 257 + 0 × 256 + 1 × 255 + 0 × 254 + 1 × 253 + 0 × 252 + 1 × 251 + 0 × 250 + 0 × 249 + 0 × 248 + 1 × 247 + 0 × 246 + 1 × 245 + 0 × 244 + 1 × 243 + 0 × 242 + 0 × 241 + 0 × 240 + 0 × 239 + 1 × 238 + 1 × 237 + 0 × 236 + 0 × 235 + 1 × 234 + 0 × 233 + 0 × 232 + 0 × 231 + 1 × 230 + 1 × 229 + 0 × 228 + 0 × 227 + 1 × 226 + 1 × 225 + 0 × 224 + 1 × 223 + 1 × 222 + 1 × 221 + 1 × 220 + 0 × 219 + 1 × 218 + 1 × 217 + 0 × 216 + 1 × 215 + 1 × 214 + 0 × 213 + 0 × 212 + 1 × 211 + 0 × 210 + 0 × 29 + 0 × 28 + 1 × 27 + 1 × 26 + 0 × 25 + 0 × 24 + 1 × 23 + 0 × 22 + 0 × 21 + 0 × 20)(10) =
(9 223 372 036 854 775 808 + 0 + 0 + 0 + 0 + 288 230 376 151 711 744 + 144 115 188 075 855 872 + 0 + 36 028 797 018 963 968 + 0 + 9 007 199 254 740 992 + 0 + 2 251 799 813 685 248 + 0 + 0 + 0 + 140 737 488 355 328 + 0 + 35 184 372 088 832 + 0 + 8 796 093 022 208 + 0 + 0 + 0 + 0 + 274 877 906 944 + 137 438 953 472 + 0 + 0 + 17 179 869 184 + 0 + 0 + 0 + 1 073 741 824 + 536 870 912 + 0 + 0 + 67 108 864 + 33 554 432 + 0 + 8 388 608 + 4 194 304 + 2 097 152 + 1 048 576 + 0 + 262 144 + 131 072 + 0 + 32 768 + 16 384 + 0 + 0 + 2 048 + 0 + 0 + 0 + 128 + 64 + 0 + 0 + 8 + 0 + 0 + 0)(10) =
(9 223 372 036 854 775 808 + 288 230 376 151 711 744 + 144 115 188 075 855 872 + 36 028 797 018 963 968 + 9 007 199 254 740 992 + 2 251 799 813 685 248 + 140 737 488 355 328 + 35 184 372 088 832 + 8 796 093 022 208 + 274 877 906 944 + 137 438 953 472 + 17 179 869 184 + 1 073 741 824 + 536 870 912 + 67 108 864 + 33 554 432 + 8 388 608 + 4 194 304 + 2 097 152 + 1 048 576 + 262 144 + 131 072 + 32 768 + 16 384 + 2 048 + 128 + 64 + 8)(10) =
9 703 190 546 347 378 888(10)
The number 1000 0110 1010 1000 1010 1000 0110 0100 0110 0110 1111 0110 1100 1000 1100 1000(2) converted from an unsigned binary (in base 2) and written as a positive integer (with no sign) in decimal system (in base ten):
1000 0110 1010 1000 1010 1000 0110 0100 0110 0110 1111 0110 1100 1000 1100 1000(2) = 9 703 190 546 347 378 888(10)
Spaces were used to group digits: for binary, by 4, for decimal, by 3.