Let's divide 31481022 by 810
The aim is to understand the frequency of 810 in 31481022.

Let's proceed to step 1:
When dividing 3 by 810, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 810

On to step 2:
810 goes into 31 0 times with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Grab the next digit (4) from the dividend, add it to 31, then carry on: 314 / 810

Moving on to step 3:
810 goes into 314 0 times with a remainder of 314.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 314 to get 314.
Include the next digit (8) from the dividend after 314, then repeat: 3148 / 810

Moving on to step 4:
3148 divided by 810 is 3 with a remainder of 718.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 2430 from 3148, we get 718.
Grab the next digit (1) from the dividend, add it to 718, then carry on: 7181 / 810

Step 5:
If we divide 7181 by 810, we get 8 and a remainder of 701.
The next digit of our result is 8. 
Result so far: 38.0
Deduct 6480 from 7181 and we're left with 701.
Fetch the next digit (0) from the dividend, attach it to 701 and continue: 7010 / 810

Let's proceed to step 6:
If we divide 7010 by 810, we get 8 and a remainder of 530.
The next digit of our result is 8. 
Result so far: 388.0
Subtract 6480 from 7010 to get 530.
Fetch the next digit (2) from the dividend, attach it to 530 and continue: 5302 / 810

Step 7:
The number 810 fits into 5302 6 times, leaving a remainder of 442.
Put 6 as the next digit of the answer. 
Result so far: 3886.0
Subtracting 4860 from 5302 leaves us with 442.
Grab the next digit (2) from the dividend, add it to 442, then carry on: 4422 / 810

Let's proceed to step 8:
When dividing 4422 by 810, we get 5 with a remainder of 372.
Use 5 as the next digit of our solution. 
Result so far: 38865.0
Subtract 4050 from 4422 to get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Step 9:
810 can be fit into 3720 4 times, resulting in a remainder of 480.
The next digit of our result is 4. 
Result so far: 38865.4
Subtracting 3240 from 3720 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 10:
810 can be fit into 4800 5 times, resulting in a remainder of 750.
Write down 5 as next digit of the result. 
Result so far: 38865.45
Subtracting 4050 from 4800 leaves us with 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Moving on to step 11:
The number 810 fits into 7500 9 times, leaving a remainder of 210.
Record the quotient 9 as the next digit in the result. 
Result so far: 38865.459
Deduct 7290 from 7500 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 12:
If we divide 2100 by 810, we get 2 and a remainder of 480.
The number 2 becomes the next digit in our result. 
Result so far: 38865.4592
Subtract 1620 from 2100 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 13:
810 goes into 4800 5 times with a remainder of 750.
The next digit of our result is 5. 
Result so far: 38865.45925
If we take 4050 away from 4800, we end up with 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Advancing to step 14:
7500 divided by 810 is 9 with a remainder of 210.
The next digit of our result is 9. 
Result so far: 38865.459259
If we subtract 7290 from 7500, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Moving on to step 15:
When dividing 2100 by 810, we get 2 with a remainder of 480.
Record the quotient 2 as the next digit in the result. 
Result so far: 38865.4592592
Deduct 1620 from 2100 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 16:
The number 810 fits into 4800 5 times, leaving a remainder of 750.
Put 5 as the next digit of the answer. 
Result so far: 38865.45925925
Subtracting 4050 from 4800 leaves us with 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

In conclusion, the division gives 38865.45925925 with a balance of 7.5e-07.