Заменить строки в txt

Формат txt файла:

19,"n","d","m"
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08435059
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007
1.00000000,262.08432007

19 - количество строк. Нужно заменить (в данном случае) цифру 1 на числа от 0 до 180 с шагом 10, т.е. Должно получиться:

19,"n","d","m"
0.00000000,262.08432007
10.00000000,262.08432007
20.00000000,262.08432007
30.00000000,262.08432007
40.00000000,262.08432007
50.00000000,262.08432007
60.00000000,262.08432007
70.00000000,262.08432007
80.00000000,262.08435059
90.00000000,262.08432007
100.00000000,262.08432007
110.00000000,262.08432007
120.00000000,262.08432007
130.00000000,262.08432007
140.00000000,262.08432007
150.00000000,262.08432007
160.00000000,262.08432007
170.00000000,262.08432007
180.00000000,262.08432007

В данном примере от 0 до 180 с шагом 10, т.е. 19 строк. Но может быть и другой шаг (1, 2,3, 4, 5, 6,9, 10, 12, 15, 18,20,30, 36, 45)