Let's divide 970011 by 21
The aim is to understand the frequency of 21 in 970011.

Moving on to step 1:
9 divided by 21 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 21

Going ahead to step 2:
21 goes into 97 4 times with a remainder of 13.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 13 after subtracting 84 from 97.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 21

Let's proceed to step 3:
21 can be fit into 130 6 times, resulting in a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 46.0
If we subtract 126 from 130, we get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 21

Moving on to step 4:
40 divided by 21 is 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 461.0
Deduct 21 from 40 and we're left with 19.
Grab the next digit (1) from the dividend, add it to 19, then carry on: 191 / 21

On to step 5:
The number 21 fits into 191 9 times, leaving a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 4619.0
Subtracting 189 from 191 leaves us with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 21

Going ahead to step 6:
If we divide 21 by 21, we get 1 and a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 46191.0
Subtracting 21 from 21 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
When dividing 0 by 21, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 46191.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
The number 21 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 46191.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 46191.0, with a leftover of 0.0.