How to generate a sequence of random numbers in given ranges?

I'm trying to generate a list of 10 random numbers. I have some ranges like:

• 0 to 9
• 10 to 99
• 100 to 999
• 1000 to 9999
• 10000 to 99999
• 100000 to 999999.

If I generate a random number in a (min, max) range where min = 0 and max = 999999 with this code

import 'dart:math';
final _random = new Random();
   
int next(int min, int max) => min + _random.nextInt(max - min);

a number between 100000 and 999999 is more likely to be generated than a number between 0 and 9.

I would like to generate 10 random numbers in the given ranges with equal probability for each range.