83898428 ÷ 812 
The aim is to understand the frequency of 812 in 83898428.

On to step 1:
812 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
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 812

On to step 2:
812 can be fit into 83 0 times, resulting in a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 83, we end up with 83.
Fetch the next digit (8) from the dividend, attach it to 83 and continue: 838 / 812

Going ahead to step 3:
When dividing 838 by 812, we get 1 with a remainder of 26.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 812 from 838 to get 26.
Grab the next digit (9) from the dividend, add it to 26, then carry on: 269 / 812

Let's proceed to step 4:
When dividing 269 by 812, we get 0 with a remainder of 269.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 269, we end up with 269.
Fetch the next digit (8) from the dividend, attach it to 269 and continue: 2698 / 812

Advancing to step 5:
812 can be fit into 2698 3 times, resulting in a remainder of 262.
Use 3 as the next digit of our solution. 
Result so far: 103.0
If we take 2436 away from 2698, we end up with 262.
Take the next digit (4) from the dividend and append it to 262, then repeat: 2624 / 812

On to step 6:
2624 divided by 812 is 3 with a remainder of 188.
Record the quotient 3 as the next digit in the result. 
Result so far: 1033.0
Subtracting 2436 from 2624 leaves us with 188.
Bring next digit (2) of the dividend behind the 188 and repeat the process: 1882 / 812

Advancing to step 7:
The number 812 fits into 1882 2 times, leaving a remainder of 258.
The next digit of our result is 2. 
Result so far: 10332.0
Subtract 1624 from 1882 to get 258.
Take the next digit (8) from the dividend and append it to 258, then repeat: 2588 / 812

Step 8:
812 goes into 2588 3 times with a remainder of 152.
Put 3 as the next digit of the answer. 
Result so far: 103323.0
The remainder is 152 after subtracting 2436 from 2588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 9:
812 can be fit into 1520 1 times, resulting in a remainder of 708.
Put 1 as the next digit of the answer. 
Result so far: 103323.1
Subtracting 812 from 1520 leaves us with 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

Step 10:
If we divide 7080 by 812, we get 8 and a remainder of 584.
Put 8 as the next digit of the answer. 
Result so far: 103323.18
Subtract 6496 from 7080 to get 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Step 11:
The number 812 fits into 5840 7 times, leaving a remainder of 156.
The next digit of our result is 7. 
Result so far: 103323.187
Deduct 5684 from 5840 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Moving on to step 12:
1560 divided by 812 is 1 with a remainder of 748.
The number 1 becomes the next digit in our result. 
Result so far: 103323.1871
Deduct 812 from 1560 and we're left with 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

Moving on to step 13:
7480 divided by 812 is 9 with a remainder of 172.
The number 9 becomes the next digit in our result. 
Result so far: 103323.18719
The remainder is 172 after subtracting 7308 from 7480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Step 14:
812 goes into 1720 2 times with a remainder of 96.
The next digit of our result is 2. 
Result so far: 103323.187192
If we subtract 1624 from 1720, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 15:
If we divide 960 by 812, we get 1 and a remainder of 148.
Put 1 as the next digit of the answer. 
Result so far: 103323.1871921
The remainder is 148 after subtracting 812 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Going ahead to step 16:
The number 812 fits into 1480 1 times, leaving a remainder of 668.
Write down 1 as next digit of the result. 
Result so far: 103323.18719211
The remainder is 668 after subtracting 812 from 1480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6680, and continue the process.

After the division, we end up with 103323.18719211 and a remainder of 6.68e-07.