We divide 20961353 by 581
The aim is to understand the frequency of 581 in 20961353.

Moving on to step 1:
2 divided by 581 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 581

On to step 2:
581 goes into 20 0 times with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Include the next digit (9) from the dividend after 20, then repeat: 209 / 581

On to step 3:
The number 581 fits into 209 0 times, leaving a remainder of 209.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 209 leaves us with 209.
Include the next digit (6) from the dividend after 209, then repeat: 2096 / 581

Let's proceed to step 4:
The number 581 fits into 2096 3 times, leaving a remainder of 353.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 1743 from 2096, we get 353.
Fetch the next digit (1) from the dividend, attach it to 353 and continue: 3531 / 581

On to step 5:
If we divide 3531 by 581, we get 6 and a remainder of 45.
Write down 6 as next digit of the result. 
Result so far: 36.0
Subtracting 3486 from 3531 leaves us with 45.
Fetch the next digit (3) from the dividend, attach it to 45 and continue: 453 / 581

Moving on to step 6:
581 goes into 453 0 times with a remainder of 453.
The next digit of our result is 0. 
Result so far: 360.0
If we take 0 away from 453, we end up with 453.
Take the next digit (5) from the dividend and append it to 453, then repeat: 4535 / 581

Going ahead to step 7:
581 goes into 4535 7 times with a remainder of 468.
Record the quotient 7 as the next digit in the result. 
Result so far: 3607.0
Deduct 4067 from 4535 and we're left with 468.
Include the next digit (3) from the dividend after 468, then repeat: 4683 / 581

Step 8:
The number 581 fits into 4683 8 times, leaving a remainder of 35.
Write down 8 as next digit of the result. 
Result so far: 36078.0
The remainder is 35 after subtracting 4648 from 4683.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 9:
581 can be fit into 350 0 times, resulting in a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 36078.0
Deduct 0 from 350 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Let's proceed to step 10:
581 can be fit into 3500 6 times, resulting in a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 36078.06
If we subtract 3486 from 3500, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 11:
140 divided by 581 is 0 with a remainder of 140.
The number 0 becomes the next digit in our result. 
Result so far: 36078.06
The remainder is 140 after subtracting 0 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 12:
581 can be fit into 1400 2 times, resulting in a remainder of 238.
Use 2 as the next digit of our solution. 
Result so far: 36078.0602
Subtract 1162 from 1400 to get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Let's proceed to step 13:
581 goes into 2380 4 times with a remainder of 56.
The next digit of our result is 4. 
Result so far: 36078.06024
The remainder is 56 after subtracting 2324 from 2380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 14:
581 can be fit into 560 0 times, resulting in a remainder of 560.
Record the quotient 0 as the next digit in the result. 
Result so far: 36078.06024
If we take 0 away from 560, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Step 15:
581 can be fit into 5600 9 times, resulting in a remainder of 371.
Use 9 as the next digit of our solution. 
Result so far: 36078.0602409
If we take 5229 away from 5600, we end up with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Advancing to step 16:
The number 581 fits into 3710 6 times, leaving a remainder of 224.
Record the quotient 6 as the next digit in the result. 
Result so far: 36078.06024096
If we subtract 3486 from 3710, we get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Our division results in 36078.06024096 with a remaining 2.24e-07.