Let's divide 80853731 by 406
The aim is to understand the frequency of 406 in 80853731.

Step 1:
406 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 406

On to step 2:
The number 406 fits into 80 0 times, leaving a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Include the next digit (8) from the dividend after 80, then repeat: 808 / 406

On to step 3:
406 goes into 808 1 times with a remainder of 402.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 402 after subtracting 406 from 808.
Include the next digit (5) from the dividend after 402, then repeat: 4025 / 406

Going ahead to step 4:
4025 divided by 406 is 9 with a remainder of 371.
The next digit of our result is 9. 
Result so far: 19.0
Deduct 3654 from 4025 and we're left with 371.
Grab the next digit (3) from the dividend, add it to 371, then carry on: 3713 / 406

Advancing to step 5:
406 can be fit into 3713 9 times, resulting in a remainder of 59.
Use 9 as the next digit of our solution. 
Result so far: 199.0
Deduct 3654 from 3713 and we're left with 59.
Fetch the next digit (7) from the dividend, attach it to 59 and continue: 597 / 406

Going ahead to step 6:
406 can be fit into 597 1 times, resulting in a remainder of 191.
The next digit of our result is 1. 
Result so far: 1991.0
If we subtract 406 from 597, we get 191.
Fetch the next digit (3) from the dividend, attach it to 191 and continue: 1913 / 406

Going ahead to step 7:
406 goes into 1913 4 times with a remainder of 289.
The next digit of our result is 4. 
Result so far: 19914.0
Subtract 1624 from 1913 to get 289.
Take the next digit (1) from the dividend and append it to 289, then repeat: 2891 / 406

On to step 8:
2891 divided by 406 is 7 with a remainder of 49.
Put 7 as the next digit of the answer. 
Result so far: 199147.0
The remainder is 49 after subtracting 2842 from 2891.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 9:
When dividing 490 by 406, we get 1 with a remainder of 84.
Put 1 as the next digit of the answer. 
Result so far: 199147.1
If we subtract 406 from 490, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 10:
406 can be fit into 840 2 times, resulting in a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 199147.12
If we take 812 away from 840, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 11:
If we divide 280 by 406, we get 0 and a remainder of 280.
The next digit of our result is 0. 
Result so far: 199147.12
If we take 0 away from 280, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 12:
2800 divided by 406 is 6 with a remainder of 364.
Put 6 as the next digit of the answer. 
Result so far: 199147.1206
If we subtract 2436 from 2800, we 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.

Let's proceed to step 13:
When dividing 3640 by 406, we get 8 with a remainder of 392.
Record the quotient 8 as the next digit in the result. 
Result so far: 199147.12068
Deduct 3248 from 3640 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 14:
If we divide 3920 by 406, we get 9 and a remainder of 266.
The next digit of our result is 9. 
Result so far: 199147.120689
If we subtract 3654 from 3920, we get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Let's proceed to step 15:
406 goes into 2660 6 times with a remainder of 224.
Write down 6 as next digit of the result. 
Result so far: 199147.1206896
Deduct 2436 from 2660 and we're left 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.

Advancing to step 16:
The number 406 fits into 2240 5 times, leaving a remainder of 210.
Write down 5 as next digit of the result. 
Result so far: 199147.12068965
Deduct 2030 from 2240 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.

The final outcome is 199147.12068965, with a leftover of 2.1e-07.