1. Map the unsigned binary number's digits versus the corresponding powers of 2 that their place value represent:
234
1 233
1 232
1 231
0 230
0 229
0 228
0 227
1 226
1 225
1 224
1 223
0 222
0 221
0 220
1 219
1 218
1 217
1 216
0 215
0 214
1 213
1 212
1 211
1 210
0 29
0 28
0 27
1 26
1 25
1 24
0 23
1 22
1 21
1 20
1
2. Multiply each bit by its corresponding power of 2 and add all the terms up:
111 0000 1111 0001 1110 0111 1000 1110 1111(2) =
(1 × 234 + 1 × 233 + 1 × 232 + 0 × 231 + 0 × 230 + 0 × 229 + 0 × 228 + 1 × 227 + 1 × 226 + 1 × 225 + 1 × 224 + 0 × 223 + 0 × 222 + 0 × 221 + 1 × 220 + 1 × 219 + 1 × 218 + 1 × 217 + 0 × 216 + 0 × 215 + 1 × 214 + 1 × 213 + 1 × 212 + 1 × 211 + 0 × 210 + 0 × 29 + 0 × 28 + 1 × 27 + 1 × 26 + 1 × 25 + 0 × 24 + 1 × 23 + 1 × 22 + 1 × 21 + 1 × 20)(10) =
(17 179 869 184 + 8 589 934 592 + 4 294 967 296 + 0 + 0 + 0 + 0 + 134 217 728 + 67 108 864 + 33 554 432 + 16 777 216 + 0 + 0 + 0 + 1 048 576 + 524 288 + 262 144 + 131 072 + 0 + 0 + 16 384 + 8 192 + 4 096 + 2 048 + 0 + 0 + 0 + 128 + 64 + 32 + 0 + 8 + 4 + 2 + 1)(10) =
(17 179 869 184 + 8 589 934 592 + 4 294 967 296 + 134 217 728 + 67 108 864 + 33 554 432 + 16 777 216 + 1 048 576 + 524 288 + 262 144 + 131 072 + 16 384 + 8 192 + 4 096 + 2 048 + 128 + 64 + 32 + 8 + 4 + 2 + 1)(10) =
30 318 426 351(10)