91372715 ÷ 821 
The aim is to understand the frequency of 821 in 91372715.

Let's proceed to step 1:
821 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 821

Let's proceed to step 2:
The number 821 fits into 91 0 times, leaving a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Append the next digit (3) from the dividend to 91 and continue with: 913 / 821

On to step 3:
821 can be fit into 913 1 times, resulting in a remainder of 92.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 821 from 913 and we're left with 92.
Append the next digit (7) from the dividend to 92 and continue with: 927 / 821

On to step 4:
If we divide 927 by 821, we get 1 and a remainder of 106.
The next digit of our result is 1. 
Result so far: 11.0
Deduct 821 from 927 and we're left with 106.
Grab the next digit (2) from the dividend, add it to 106, then carry on: 1062 / 821

Going ahead to step 5:
821 can be fit into 1062 1 times, resulting in a remainder of 241.
The next digit of our result is 1. 
Result so far: 111.0
If we take 821 away from 1062, we end up with 241.
Append the next digit (7) from the dividend to 241 and continue with: 2417 / 821

Step 6:
If we divide 2417 by 821, we get 2 and a remainder of 775.
Put 2 as the next digit of the answer. 
Result so far: 1112.0
Subtract 1642 from 2417 to get 775.
Fetch the next digit (1) from the dividend, attach it to 775 and continue: 7751 / 821

Let's proceed to step 7:
7751 divided by 821 is 9 with a remainder of 362.
Put 9 as the next digit of the answer. 
Result so far: 11129.0
The remainder is 362 after subtracting 7389 from 7751.
Append the next digit (5) from the dividend to 362 and continue with: 3625 / 821

Going ahead to step 8:
821 goes into 3625 4 times with a remainder of 341.
The next digit of our result is 4. 
Result so far: 111294.0
If we take 3284 away from 3625, we end up with 341.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Moving on to step 9:
821 goes into 3410 4 times with a remainder of 126.
Put 4 as the next digit of the answer. 
Result so far: 111294.4
Subtract 3284 from 3410 to get 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Advancing to step 10:
If we divide 1260 by 821, we get 1 and a remainder of 439.
Use 1 as the next digit of our solution. 
Result so far: 111294.41
Subtracting 821 from 1260 leaves us with 439.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4390, and continue the process.

Going ahead to step 11:
When dividing 4390 by 821, we get 5 with a remainder of 285.
The next digit of our result is 5. 
Result so far: 111294.415
Deduct 4105 from 4390 and we're left with 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Going ahead to step 12:
2850 divided by 821 is 3 with a remainder of 387.
The next digit of our result is 3. 
Result so far: 111294.4153
The remainder is 387 after subtracting 2463 from 2850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Step 13:
821 goes into 3870 4 times with a remainder of 586.
Record the quotient 4 as the next digit in the result. 
Result so far: 111294.41534
If we subtract 3284 from 3870, we get 586.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5860, and continue the process.

Step 14:
If we divide 5860 by 821, we get 7 and a remainder of 113.
Record the quotient 7 as the next digit in the result. 
Result so far: 111294.415347
The remainder is 113 after subtracting 5747 from 5860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Moving on to step 15:
821 goes into 1130 1 times with a remainder of 309.
Use 1 as the next digit of our solution. 
Result so far: 111294.4153471
If we take 821 away from 1130, we end up with 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Moving on to step 16:
821 goes into 3090 3 times with a remainder of 627.
Write down 3 as next digit of the result. 
Result so far: 111294.41534713
Subtracting 2463 from 3090 leaves us with 627.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6270, and continue the process.

Our division results in 111294.41534713 with a remaining 6.27e-07.