We look at the division of 81678652 by 531 
The aim is to understand the frequency of 531 in 81678652.

Going ahead to step 1:
When dividing 8 by 531, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 531

Step 2:
531 goes into 81 0 times with a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Bring next digit (6) of the dividend behind the 81 and repeat the process: 816 / 531

On to step 3:
The number 531 fits into 816 1 times, leaving a remainder of 285.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 531 from 816 and we're left with 285.
Fetch the next digit (7) from the dividend, attach it to 285 and continue: 2857 / 531

Advancing to step 4:
2857 divided by 531 is 5 with a remainder of 202.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we subtract 2655 from 2857, we get 202.
Grab the next digit (8) from the dividend, add it to 202, then carry on: 2028 / 531

Moving on to step 5:
If we divide 2028 by 531, we get 3 and a remainder of 435.
Use 3 as the next digit of our solution. 
Result so far: 153.0
Subtracting 1593 from 2028 leaves us with 435.
Grab the next digit (6) from the dividend, add it to 435, then carry on: 4356 / 531

On to step 6:
The number 531 fits into 4356 8 times, leaving a remainder of 108.
Record the quotient 8 as the next digit in the result. 
Result so far: 1538.0
Deduct 4248 from 4356 and we're left with 108.
Include the next digit (5) from the dividend after 108, then repeat: 1085 / 531

Going ahead to step 7:
When dividing 1085 by 531, we get 2 with a remainder of 23.
The next digit of our result is 2. 
Result so far: 15382.0
The remainder is 23 after subtracting 1062 from 1085.
Take the next digit (2) from the dividend and append it to 23, then repeat: 232 / 531

Step 8:
531 can be fit into 232 0 times, resulting in a remainder of 232.
Use 0 as the next digit of our solution. 
Result so far: 153820.0
If we take 0 away from 232, we end up with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Going ahead to step 9:
The number 531 fits into 2320 4 times, leaving a remainder of 196.
The next digit of our result is 4. 
Result so far: 153820.4
Subtract 2124 from 2320 to get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Going ahead to step 10:
531 can be fit into 1960 3 times, resulting in a remainder of 367.
The number 3 becomes the next digit in our result. 
Result so far: 153820.43
The remainder is 367 after subtracting 1593 from 1960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Step 11:
If we divide 3670 by 531, we get 6 and a remainder of 484.
The number 6 becomes the next digit in our result. 
Result so far: 153820.436
Subtracting 3186 from 3670 leaves us with 484.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4840, and continue the process.

On to step 12:
The number 531 fits into 4840 9 times, leaving a remainder of 61.
The next digit of our result is 9. 
Result so far: 153820.4369
Subtract 4779 from 4840 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 13:
If we divide 610 by 531, we get 1 and a remainder of 79.
The next digit of our result is 1. 
Result so far: 153820.43691
Subtract 531 from 610 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 14:
If we divide 790 by 531, we get 1 and a remainder of 259.
The number 1 becomes the next digit in our result. 
Result so far: 153820.436911
If we take 531 away from 790, we end up with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

In conclusion, the division gives 153820.436911 with a balance of 2.59e-05.