We divide 86969323 by 581
The aim is to understand the frequency of 581 in 86969323.

Step 1:
581 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 581

Let's proceed to step 2:
581 can be fit into 86 0 times, resulting in a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Take the next digit (9) from the dividend and append it to 86, then repeat: 869 / 581

Step 3:
869 divided by 581 is 1 with a remainder of 288.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 581 from 869 leaves us with 288.
Fetch the next digit (6) from the dividend, attach it to 288 and continue: 2886 / 581

Step 4:
2886 divided by 581 is 4 with a remainder of 562.
Put 4 as the next digit of the answer. 
Result so far: 14.0
The remainder is 562 after subtracting 2324 from 2886.
Include the next digit (9) from the dividend after 562, then repeat: 5629 / 581

On to step 5:
581 goes into 5629 9 times with a remainder of 400.
Record the quotient 9 as the next digit in the result. 
Result so far: 149.0
Deduct 5229 from 5629 and we're left with 400.
Grab the next digit (3) from the dividend, add it to 400, then carry on: 4003 / 581

Step 6:
The number 581 fits into 4003 6 times, leaving a remainder of 517.
Use 6 as the next digit of our solution. 
Result so far: 1496.0
If we take 3486 away from 4003, we end up with 517.
Bring next digit (2) of the dividend behind the 517 and repeat the process: 5172 / 581

Moving on to step 7:
When dividing 5172 by 581, we get 8 with a remainder of 524.
Write down 8 as next digit of the result. 
Result so far: 14968.0
Subtracting 4648 from 5172 leaves us with 524.
Fetch the next digit (3) from the dividend, attach it to 524 and continue: 5243 / 581

Step 8:
581 can be fit into 5243 9 times, resulting in a remainder of 14.
The next digit of our result is 9. 
Result so far: 149689.0
Subtract 5229 from 5243 to 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.

Step 9:
The number 581 fits into 140 0 times, leaving a remainder of 140.
The next digit of our result is 0. 
Result so far: 149689.0
Deduct 0 from 140 and we're left with 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 10:
When dividing 1400 by 581, we get 2 with a remainder of 238.
Use 2 as the next digit of our solution. 
Result so far: 149689.02
The remainder is 238 after subtracting 1162 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 11:
581 can be fit into 2380 4 times, resulting in a remainder of 56.
The next digit of our result is 4. 
Result so far: 149689.024
Subtracting 2324 from 2380 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 12:
If we divide 560 by 581, we get 0 and a remainder of 560.
The next digit of our result is 0. 
Result so far: 149689.024
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 13:
581 can be fit into 5600 9 times, resulting in a remainder of 371.
The number 9 becomes the next digit in our result. 
Result so far: 149689.02409
Subtracting 5229 from 5600 leaves us 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.

Let's proceed to step 14:
When dividing 3710 by 581, we get 6 with a remainder of 224.
Use 6 as the next digit of our solution. 
Result so far: 149689.024096
If we take 3486 away from 3710, we end up with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 15:
The number 581 fits into 2240 3 times, leaving a remainder of 497.
Use 3 as the next digit of our solution. 
Result so far: 149689.0240963
If we take 1743 away from 2240, we end up with 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

On to step 16:
581 goes into 4970 8 times with a remainder of 322.
The next digit of our result is 8. 
Result so far: 149689.02409638
If we take 4648 away from 4970, we end up with 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

The final result is 149689.02409638 with a remainder of 3.22e-07.