Шаг|         Команды         |  N2  |  k  |  N10  |  Условие
 1 | Ввод N2, k:=1, N10:=0   |10101 |  1  |    0  |
 2 | N2 <> 0                 |      |     |       | 10101 <> 0, да
 3 | N10:=N10 + mod(N2,10)*k |      |     |    1  |
 4 | k := k*2                |      |  2  |       |
 5 | N2 := div(N2, 10)       | 1010 |     |       |
 6 | N2 <> 0                 |      |     |       |  1010 <> 0, да
 7 | N10:=N10 + mod(N2,10)*k |      |     |    1  |
 8 | k := k*2                |      |  4  |       |
 9 | N2 := div(N2, 10)       |  101 |     |       |
10 | N2 <> 0                 |      |     |       |   101 <> 0, да
11 | N10:=N10 + mod(N2,10)*k |      |     |    5  |
12 | k := k*2                |      |  8  |       |
13 | N2 := div(N2, 10)       |   10 |     |       |
14 | N2 <> 0                 |      |     |       |    10 <> 0, да
15 | N10:=N10 + mod(N2,10)*k |      |     |    5  |
16 | k := k*2                |      | 16  |       |
17 | N2 := div(N2, 10)       |    1 |     |       |
18 | N2 <> 0                 |      |     |       |     1 <> 0, да
19 | N10:=N10 + mod(N2,10)*k |      |     |   21  |
20 | k := k*2                |      | 32  |       |
21 | N2 := div(N2, 10)       |    0 |     |       |
22 | N2 <> 0                 |      |     |       |     0 <> 0, нет
23 | Вывод N10               |      |     |   21  |