2. Multiply each bit by its corresponding power of 2 and add all the terms up.
100 0001 0110 1100 0110 1001 0100 0100 1110 0001 0111 1001 0110 0001 1110 1110(2) =
(1 × 262 + 0 × 261 + 0 × 260 + 0 × 259 + 0 × 258 + 0 × 257 + 1 × 256 + 0 × 255 + 1 × 254 + 1 × 253 + 0 × 252 + 1 × 251 + 1 × 250 + 0 × 249 + 0 × 248 + 0 × 247 + 1 × 246 + 1 × 245 + 0 × 244 + 1 × 243 + 0 × 242 + 0 × 241 + 1 × 240 + 0 × 239 + 1 × 238 + 0 × 237 + 0 × 236 + 0 × 235 + 1 × 234 + 0 × 233 + 0 × 232 + 1 × 231 + 1 × 230 + 1 × 229 + 0 × 228 + 0 × 227 + 0 × 226 + 0 × 225 + 1 × 224 + 0 × 223 + 1 × 222 + 1 × 221 + 1 × 220 + 1 × 219 + 0 × 218 + 0 × 217 + 1 × 216 + 0 × 215 + 1 × 214 + 1 × 213 + 0 × 212 + 0 × 211 + 0 × 210 + 0 × 29 + 1 × 28 + 1 × 27 + 1 × 26 + 1 × 25 + 0 × 24 + 1 × 23 + 1 × 22 + 1 × 21 + 0 × 20)(10) =
(4 611 686 018 427 387 904 + 0 + 0 + 0 + 0 + 0 + 72 057 594 037 927 936 + 0 + 18 014 398 509 481 984 + 9 007 199 254 740 992 + 0 + 2 251 799 813 685 248 + 1 125 899 906 842 624 + 0 + 0 + 0 + 70 368 744 177 664 + 35 184 372 088 832 + 0 + 8 796 093 022 208 + 0 + 0 + 1 099 511 627 776 + 0 + 274 877 906 944 + 0 + 0 + 0 + 17 179 869 184 + 0 + 0 + 2 147 483 648 + 1 073 741 824 + 536 870 912 + 0 + 0 + 0 + 0 + 16 777 216 + 0 + 4 194 304 + 2 097 152 + 1 048 576 + 524 288 + 0 + 0 + 65 536 + 0 + 16 384 + 8 192 + 0 + 0 + 0 + 0 + 256 + 128 + 64 + 32 + 0 + 8 + 4 + 2 + 0)(10) =
(4 611 686 018 427 387 904 + 72 057 594 037 927 936 + 18 014 398 509 481 984 + 9 007 199 254 740 992 + 2 251 799 813 685 248 + 1 125 899 906 842 624 + 70 368 744 177 664 + 35 184 372 088 832 + 8 796 093 022 208 + 1 099 511 627 776 + 274 877 906 944 + 17 179 869 184 + 2 147 483 648 + 1 073 741 824 + 536 870 912 + 16 777 216 + 4 194 304 + 2 097 152 + 1 048 576 + 524 288 + 65 536 + 16 384 + 8 192 + 256 + 128 + 64 + 32 + 8 + 4 + 2)(10) =
4 714 258 654 511 587 822(10)
The number 100 0001 0110 1100 0110 1001 0100 0100 1110 0001 0111 1001 0110 0001 1110 1110(2) converted from an unsigned binary (in base 2) and written as a positive integer (with no sign) in decimal system (in base ten):
100 0001 0110 1100 0110 1001 0100 0100 1110 0001 0111 1001 0110 0001 1110 1110(2) = 4 714 258 654 511 587 822(10)
Spaces were used to group digits: for binary, by 4, for decimal, by 3.