91645021 divided by 805 
The aim is to understand the frequency of 805 in 91645021.

Step 1:
The number 805 fits into 9 0 times, leaving a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 805

Going ahead to step 2:
When dividing 91 by 805, we get 0 with a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 91 to get 91.
Fetch the next digit (6) from the dividend, attach it to 91 and continue: 916 / 805

Advancing to step 3:
If we divide 916 by 805, we get 1 and a remainder of 111.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 805 away from 916, we end up with 111.
Include the next digit (4) from the dividend after 111, then repeat: 1114 / 805

Going ahead to step 4:
The number 805 fits into 1114 1 times, leaving a remainder of 309.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 805 from 1114 leaves us with 309.
Bring next digit (5) of the dividend behind the 309 and repeat the process: 3095 / 805

Step 5:
The number 805 fits into 3095 3 times, leaving a remainder of 680.
Use 3 as the next digit of our solution. 
Result so far: 113.0
Subtract 2415 from 3095 to get 680.
Include the next digit (0) from the dividend after 680, then repeat: 6800 / 805

Advancing to step 6:
The number 805 fits into 6800 8 times, leaving a remainder of 360.
Put 8 as the next digit of the answer. 
Result so far: 1138.0
Subtracting 6440 from 6800 leaves us with 360.
Grab the next digit (2) from the dividend, add it to 360, then carry on: 3602 / 805

Step 7:
If we divide 3602 by 805, we get 4 and a remainder of 382.
The number 4 becomes the next digit in our result. 
Result so far: 11384.0
Subtracting 3220 from 3602 leaves us with 382.
Take the next digit (1) from the dividend and append it to 382, then repeat: 3821 / 805

Moving on to step 8:
When dividing 3821 by 805, we get 4 with a remainder of 601.
Use 4 as the next digit of our solution. 
Result so far: 113844.0
Subtract 3220 from 3821 to get 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6010, and continue the process.

Advancing to step 9:
When dividing 6010 by 805, we get 7 with a remainder of 375.
Write down 7 as next digit of the result. 
Result so far: 113844.7
Subtracting 5635 from 6010 leaves us with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Advancing to step 10:
805 goes into 3750 4 times with a remainder of 530.
Write down 4 as next digit of the result. 
Result so far: 113844.74
Subtracting 3220 from 3750 leaves us with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Going ahead to step 11:
805 goes into 5300 6 times with a remainder of 470.
The next digit of our result is 6. 
Result so far: 113844.746
Subtract 4830 from 5300 to get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Going ahead to step 12:
805 can be fit into 4700 5 times, resulting in a remainder of 675.
Use 5 as the next digit of our solution. 
Result so far: 113844.7465
If we subtract 4025 from 4700, we get 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Let's proceed to step 13:
If we divide 6750 by 805, we get 8 and a remainder of 310.
The next digit of our result is 8. 
Result so far: 113844.74658
If we take 6440 away from 6750, we end up 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.

Moving on to step 14:
If we divide 3100 by 805, we get 3 and a remainder of 685.
The number 3 becomes the next digit in our result. 
Result so far: 113844.746583
Deduct 2415 from 3100 and we're left with 685.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6850, and continue the process.

Step 15:
If we divide 6850 by 805, we get 8 and a remainder of 410.
Write down 8 as next digit of the result. 
Result so far: 113844.7465838
Subtracting 6440 from 6850 leaves us with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Advancing to step 16:
805 can be fit into 4100 5 times, resulting in a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 113844.74658385
Deduct 4025 from 4100 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

In conclusion, the division gives 113844.74658385 with a balance of 7.5e-08.