We're dividing 81803532 by 951 
The aim is to understand the frequency of 951 in 81803532.

Advancing to step 1:
When dividing 8 by 951, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 951

Let's proceed to step 2:
The number 951 fits into 81 0 times, leaving a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Include the next digit (8) from the dividend after 81, then repeat: 818 / 951

On to step 3:
818 divided by 951 is 0 with a remainder of 818.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 818 to get 818.
Grab the next digit (0) from the dividend, add it to 818, then carry on: 8180 / 951

On to step 4:
When dividing 8180 by 951, we get 8 with a remainder of 572.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
The remainder is 572 after subtracting 7608 from 8180.
Fetch the next digit (3) from the dividend, attach it to 572 and continue: 5723 / 951

Moving on to step 5:
When dividing 5723 by 951, we get 6 with a remainder of 17.
Use 6 as the next digit of our solution. 
Result so far: 86.0
Subtracting 5706 from 5723 leaves us with 17.
Bring next digit (5) of the dividend behind the 17 and repeat the process: 175 / 951

On to step 6:
When dividing 175 by 951, we get 0 with a remainder of 175.
The number 0 becomes the next digit in our result. 
Result so far: 860.0
If we subtract 0 from 175, we get 175.
Append the next digit (3) from the dividend to 175 and continue with: 1753 / 951

On to step 7:
When dividing 1753 by 951, we get 1 with a remainder of 802.
Put 1 as the next digit of the answer. 
Result so far: 8601.0
If we subtract 951 from 1753, we get 802.
Include the next digit (2) from the dividend after 802, then repeat: 8022 / 951

Moving on to step 8:
951 goes into 8022 8 times with a remainder of 414.
Record the quotient 8 as the next digit in the result. 
Result so far: 86018.0
Subtract 7608 from 8022 to get 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Going ahead to step 9:
951 can be fit into 4140 4 times, resulting in a remainder of 336.
Put 4 as the next digit of the answer. 
Result so far: 86018.4
If we subtract 3804 from 4140, we get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Let's proceed to step 10:
951 goes into 3360 3 times with a remainder of 507.
Write down 3 as next digit of the result. 
Result so far: 86018.43
If we subtract 2853 from 3360, we get 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Advancing to step 11:
When dividing 5070 by 951, we get 5 with a remainder of 315.
Use 5 as the next digit of our solution. 
Result so far: 86018.435
The remainder is 315 after subtracting 4755 from 5070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Moving on to step 12:
951 goes into 3150 3 times with a remainder of 297.
Use 3 as the next digit of our solution. 
Result so far: 86018.4353
Subtracting 2853 from 3150 leaves us with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Advancing to step 13:
The number 951 fits into 2970 3 times, leaving a remainder of 117.
The number 3 becomes the next digit in our result. 
Result so far: 86018.43533
If we take 2853 away from 2970, we end up with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Our division results in 86018.43533 with a remaining 0.000117.