We're dividing 870805 by 83 
The aim is to understand the frequency of 83 in 870805.

Moving on to step 1:
When dividing 8 by 83, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 83

Step 2:
87 divided by 83 is 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 83 from 87, we get 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 83

Moving on to step 3:
83 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 40 and we're left with 40.
Fetch the next digit (8) from the dividend, attach it to 40 and continue: 408 / 83

On to step 4:
The number 83 fits into 408 4 times, leaving a remainder of 76.
The next digit of our result is 4. 
Result so far: 104.0
If we subtract 332 from 408, we get 76.
Bring next digit (0) of the dividend behind the 76 and repeat the process: 760 / 83

Step 5:
If we divide 760 by 83, we get 9 and a remainder of 13.
Put 9 as the next digit of the answer. 
Result so far: 1049.0
Subtracting 747 from 760 leaves us with 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 83

Let's proceed to step 6:
If we divide 135 by 83, we get 1 and a remainder of 52.
Write down 1 as next digit of the result. 
Result so far: 10491.0
If we take 83 away from 135, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 7:
The number 83 fits into 520 6 times, leaving a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 10491.6
Subtract 498 from 520 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 8:
83 goes into 220 2 times with a remainder of 54.
Put 2 as the next digit of the answer. 
Result so far: 10491.62
Deduct 166 from 220 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 9:
If we divide 540 by 83, we get 6 and a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 10491.626
Subtract 498 from 540 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 10:
When dividing 420 by 83, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 10491.6265
If we subtract 415 from 420, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 11:
83 can be fit into 50 0 times, resulting in a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 10491.6265
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 12:
If we divide 500 by 83, we get 6 and a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 10491.626506
If we take 498 away from 500, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 13:
When dividing 20 by 83, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 10491.626506
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
83 can be fit into 200 2 times, resulting in a remainder of 34.
Put 2 as the next digit of the answer. 
Result so far: 10491.62650602
Deduct 166 from 200 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

In conclusion, the division gives 10491.62650602 with a balance of 3.4e-08.