We look at the division of 84168616 by 810 
The aim is to understand the frequency of 810 in 84168616.

Advancing to step 1:
When dividing 8 by 810, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 810

On to step 2:
84 divided by 810 is 0 with a remainder of 84.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Grab the next digit (1) from the dividend, add it to 84, then carry on: 841 / 810

On to step 3:
810 can be fit into 841 1 times, resulting in a remainder of 31.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 810 from 841 to get 31.
Take the next digit (6) from the dividend and append it to 31, then repeat: 316 / 810

Let's proceed to step 4:
When dividing 316 by 810, we get 0 with a remainder of 316.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 316, we end up with 316.
Include the next digit (8) from the dividend after 316, then repeat: 3168 / 810

Advancing to step 5:
810 goes into 3168 3 times with a remainder of 738.
Write down 3 as next digit of the result. 
Result so far: 103.0
If we take 2430 away from 3168, we end up with 738.
Append the next digit (6) from the dividend to 738 and continue with: 7386 / 810

Step 6:
If we divide 7386 by 810, we get 9 and a remainder of 96.
Write down 9 as next digit of the result. 
Result so far: 1039.0
If we subtract 7290 from 7386, we get 96.
Take the next digit (1) from the dividend and append it to 96, then repeat: 961 / 810

Advancing to step 7:
961 divided by 810 is 1 with a remainder of 151.
Record the quotient 1 as the next digit in the result. 
Result so far: 10391.0
Subtracting 810 from 961 leaves us with 151.
Fetch the next digit (6) from the dividend, attach it to 151 and continue: 1516 / 810

Going ahead to step 8:
1516 divided by 810 is 1 with a remainder of 706.
Put 1 as the next digit of the answer. 
Result so far: 103911.0
If we take 810 away from 1516, we end up with 706.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7060, and continue the process.

Going ahead to step 9:
When dividing 7060 by 810, we get 8 with a remainder of 580.
The next digit of our result is 8. 
Result so far: 103911.8
Subtracting 6480 from 7060 leaves us with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

On to step 10:
5800 divided by 810 is 7 with a remainder of 130.
Use 7 as the next digit of our solution. 
Result so far: 103911.87
The remainder is 130 after subtracting 5670 from 5800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Step 11:
1300 divided by 810 is 1 with a remainder of 490.
Write down 1 as next digit of the result. 
Result so far: 103911.871
If we take 810 away from 1300, we end up with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Advancing to step 12:
810 can be fit into 4900 6 times, resulting in a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 103911.8716
If we subtract 4860 from 4900, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 13:
If we divide 400 by 810, we get 0 and a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 103911.8716
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 14:
810 can be fit into 4000 4 times, resulting in a remainder of 760.
The next digit of our result is 4. 
Result so far: 103911.871604
If we subtract 3240 from 4000, we get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Moving on to step 15:
When dividing 7600 by 810, we get 9 with a remainder of 310.
The number 9 becomes the next digit in our result. 
Result so far: 103911.8716049
Deduct 7290 from 7600 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Going ahead to step 16:
810 can be fit into 3100 3 times, resulting in a remainder of 670.
Write down 3 as next digit of the result. 
Result so far: 103911.87160493
The remainder is 670 after subtracting 2430 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6700, and continue the process.

In conclusion, the division gives 103911.87160493 with a balance of 6.7e-07.