2. Multiply each bit by its corresponding power of 2 and add all the terms up.
110 1001 0110 0010 1000 1010 1111 0010 1010 0100 0101 1100 1000 0110(2) =
(1 × 254 + 1 × 253 + 0 × 252 + 1 × 251 + 0 × 250 + 0 × 249 + 1 × 248 + 0 × 247 + 1 × 246 + 1 × 245 + 0 × 244 + 0 × 243 + 0 × 242 + 1 × 241 + 0 × 240 + 1 × 239 + 0 × 238 + 0 × 237 + 0 × 236 + 1 × 235 + 0 × 234 + 1 × 233 + 0 × 232 + 1 × 231 + 1 × 230 + 1 × 229 + 1 × 228 + 0 × 227 + 0 × 226 + 1 × 225 + 0 × 224 + 1 × 223 + 0 × 222 + 1 × 221 + 0 × 220 + 0 × 219 + 1 × 218 + 0 × 217 + 0 × 216 + 0 × 215 + 1 × 214 + 0 × 213 + 1 × 212 + 1 × 211 + 1 × 210 + 0 × 29 + 0 × 28 + 1 × 27 + 0 × 26 + 0 × 25 + 0 × 24 + 0 × 23 + 1 × 22 + 1 × 21 + 0 × 20)(10) =
(18 014 398 509 481 984 + 9 007 199 254 740 992 + 0 + 2 251 799 813 685 248 + 0 + 0 + 281 474 976 710 656 + 0 + 70 368 744 177 664 + 35 184 372 088 832 + 0 + 0 + 0 + 2 199 023 255 552 + 0 + 549 755 813 888 + 0 + 0 + 0 + 34 359 738 368 + 0 + 8 589 934 592 + 0 + 2 147 483 648 + 1 073 741 824 + 536 870 912 + 268 435 456 + 0 + 0 + 33 554 432 + 0 + 8 388 608 + 0 + 2 097 152 + 0 + 0 + 262 144 + 0 + 0 + 0 + 16 384 + 0 + 4 096 + 2 048 + 1 024 + 0 + 0 + 128 + 0 + 0 + 0 + 0 + 4 + 2 + 0)(10) =
(18 014 398 509 481 984 + 9 007 199 254 740 992 + 2 251 799 813 685 248 + 281 474 976 710 656 + 70 368 744 177 664 + 35 184 372 088 832 + 2 199 023 255 552 + 549 755 813 888 + 34 359 738 368 + 8 589 934 592 + 2 147 483 648 + 1 073 741 824 + 536 870 912 + 268 435 456 + 33 554 432 + 8 388 608 + 2 097 152 + 262 144 + 16 384 + 4 096 + 2 048 + 1 024 + 128 + 4 + 2)(10) =
29 663 221 470 485 638(10)
The number 110 1001 0110 0010 1000 1010 1111 0010 1010 0100 0101 1100 1000 0110(2) converted from an unsigned binary (in base 2) and written as a positive integer (with no sign) in decimal system (in base ten):
110 1001 0110 0010 1000 1010 1111 0010 1010 0100 0101 1100 1000 0110(2) = 29 663 221 470 485 638(10)
Spaces were used to group digits: for binary, by 4, for decimal, by 3.