We look at the division of 85384859 by 581 
The aim is to understand the frequency of 581 in 85384859.

Moving on to step 1:
When dividing 8 by 581, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 581

On to step 2:
If we divide 85 by 581, we get 0 and a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 85 leaves us with 85.
Bring next digit (3) of the dividend behind the 85 and repeat the process: 853 / 581

Going ahead to step 3:
If we divide 853 by 581, we get 1 and a remainder of 272.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 581 from 853, we get 272.
Bring next digit (8) of the dividend behind the 272 and repeat the process: 2728 / 581

Let's proceed to step 4:
581 can be fit into 2728 4 times, resulting in a remainder of 404.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
The remainder is 404 after subtracting 2324 from 2728.
Bring next digit (4) of the dividend behind the 404 and repeat the process: 4044 / 581

Advancing to step 5:
581 goes into 4044 6 times with a remainder of 558.
Write down 6 as next digit of the result. 
Result so far: 146.0
If we take 3486 away from 4044, we end up with 558.
Include the next digit (8) from the dividend after 558, then repeat: 5588 / 581

Step 6:
581 goes into 5588 9 times with a remainder of 359.
The number 9 becomes the next digit in our result. 
Result so far: 1469.0
Subtracting 5229 from 5588 leaves us with 359.
Include the next digit (5) from the dividend after 359, then repeat: 3595 / 581

Let's proceed to step 7:
3595 divided by 581 is 6 with a remainder of 109.
Use 6 as the next digit of our solution. 
Result so far: 14696.0
If we subtract 3486 from 3595, we get 109.
Grab the next digit (9) from the dividend, add it to 109, then carry on: 1099 / 581

Let's proceed to step 8:
The number 581 fits into 1099 1 times, leaving a remainder of 518.
The number 1 becomes the next digit in our result. 
Result so far: 146961.0
Subtract 581 from 1099 to get 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Moving on to step 9:
581 goes into 5180 8 times with a remainder of 532.
Put 8 as the next digit of the answer. 
Result so far: 146961.8
If we take 4648 away from 5180, we end up with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Let's proceed to step 10:
581 can be fit into 5320 9 times, resulting in a remainder of 91.
Write down 9 as next digit of the result. 
Result so far: 146961.89
If we take 5229 away from 5320, we end up with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Let's proceed to step 11:
The number 581 fits into 910 1 times, leaving a remainder of 329.
Use 1 as the next digit of our solution. 
Result so far: 146961.891
If we take 581 away from 910, we end up with 329.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3290, and continue the process.

Advancing to step 12:
When dividing 3290 by 581, we get 5 with a remainder of 385.
The number 5 becomes the next digit in our result. 
Result so far: 146961.8915
Subtracting 2905 from 3290 leaves us with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Advancing to step 13:
The number 581 fits into 3850 6 times, leaving a remainder of 364.
The number 6 becomes the next digit in our result. 
Result so far: 146961.89156
Subtract 3486 from 3850 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Going ahead to step 14:
If we divide 3640 by 581, we get 6 and a remainder of 154.
Record the quotient 6 as the next digit in the result. 
Result so far: 146961.891566
If we subtract 3486 from 3640, we get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

The quotient of the division is 146961.891566, and the remainder is 1.54e-05.