87853617 divided by 806 
The aim is to understand the frequency of 806 in 87853617.

Step 1:
If we divide 8 by 806, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 806

On to step 2:
806 can be fit into 87 0 times, resulting in a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Bring next digit (8) of the dividend behind the 87 and repeat the process: 878 / 806

Advancing to step 3:
806 goes into 878 1 times with a remainder of 72.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 806 from 878 leaves us with 72.
Append the next digit (5) from the dividend to 72 and continue with: 725 / 806

Going ahead to step 4:
806 can be fit into 725 0 times, resulting in a remainder of 725.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 725 and we're left with 725.
Append the next digit (3) from the dividend to 725 and continue with: 7253 / 806

Advancing to step 5:
The number 806 fits into 7253 8 times, leaving a remainder of 805.
Write down 8 as next digit of the result. 
Result so far: 108.0
If we take 6448 away from 7253, we end up with 805.
Take the next digit (6) from the dividend and append it to 805, then repeat: 8056 / 806

Going ahead to step 6:
The number 806 fits into 8056 9 times, leaving a remainder of 802.
The next digit of our result is 9. 
Result so far: 1089.0
The remainder is 802 after subtracting 7254 from 8056.
Grab the next digit (1) from the dividend, add it to 802, then carry on: 8021 / 806

Advancing to step 7:
The number 806 fits into 8021 9 times, leaving a remainder of 767.
Put 9 as the next digit of the answer. 
Result so far: 10899.0
Subtracting 7254 from 8021 leaves us with 767.
Fetch the next digit (7) from the dividend, attach it to 767 and continue: 7677 / 806

Let's proceed to step 8:
If we divide 7677 by 806, we get 9 and a remainder of 423.
The next digit of our result is 9. 
Result so far: 108999.0
Subtracting 7254 from 7677 leaves us with 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Moving on to step 9:
When dividing 4230 by 806, we get 5 with a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 108999.5
Subtracting 4030 from 4230 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 10:
806 can be fit into 2000 2 times, resulting in a remainder of 388.
The number 2 becomes the next digit in our result. 
Result so far: 108999.52
Subtracting 1612 from 2000 leaves us with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Going ahead to step 11:
3880 divided by 806 is 4 with a remainder of 656.
Use 4 as the next digit of our solution. 
Result so far: 108999.524
Subtract 3224 from 3880 to get 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Advancing to step 12:
When dividing 6560 by 806, we get 8 with a remainder of 112.
The number 8 becomes the next digit in our result. 
Result so far: 108999.5248
Subtract 6448 from 6560 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Let's proceed to step 13:
The number 806 fits into 1120 1 times, leaving a remainder of 314.
The next digit of our result is 1. 
Result so far: 108999.52481
If we take 806 away from 1120, we end up with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Moving on to step 14:
806 can be fit into 3140 3 times, resulting in a remainder of 722.
Record the quotient 3 as the next digit in the result. 
Result so far: 108999.524813
The remainder is 722 after subtracting 2418 from 3140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7220, and continue the process.

Moving on to step 15:
If we divide 7220 by 806, we get 8 and a remainder of 772.
The next digit of our result is 8. 
Result so far: 108999.5248138
If we take 6448 away from 7220, we end up with 772.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7720, and continue the process.

Advancing to step 16:
7720 divided by 806 is 9 with a remainder of 466.
Use 9 as the next digit of our solution. 
Result so far: 108999.52481389
The remainder is 466 after subtracting 7254 from 7720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Our division results in 108999.52481389 with a remaining 4.66e-07.