Let's divide 91187321 by 537
The aim is to understand the frequency of 537 in 91187321.

Going ahead to step 1:
If we divide 9 by 537, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 537

Let's proceed to step 2:
537 goes into 91 0 times with a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Take the next digit (1) from the dividend and append it to 91, then repeat: 911 / 537

On to step 3:
When dividing 911 by 537, we get 1 with a remainder of 374.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 537 from 911, we get 374.
Bring next digit (8) of the dividend behind the 374 and repeat the process: 3748 / 537

Moving on to step 4:
When dividing 3748 by 537, we get 6 with a remainder of 526.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we subtract 3222 from 3748, we get 526.
Fetch the next digit (7) from the dividend, attach it to 526 and continue: 5267 / 537

Moving on to step 5:
5267 divided by 537 is 9 with a remainder of 434.
Record the quotient 9 as the next digit in the result. 
Result so far: 169.0
If we subtract 4833 from 5267, we get 434.
Grab the next digit (3) from the dividend, add it to 434, then carry on: 4343 / 537

Step 6:
The number 537 fits into 4343 8 times, leaving a remainder of 47.
Record the quotient 8 as the next digit in the result. 
Result so far: 1698.0
If we take 4296 away from 4343, we end up with 47.
Include the next digit (2) from the dividend after 47, then repeat: 472 / 537

On to step 7:
The number 537 fits into 472 0 times, leaving a remainder of 472.
Record the quotient 0 as the next digit in the result. 
Result so far: 16980.0
The remainder is 472 after subtracting 0 from 472.
Include the next digit (1) from the dividend after 472, then repeat: 4721 / 537

Advancing to step 8:
4721 divided by 537 is 8 with a remainder of 425.
Write down 8 as next digit of the result. 
Result so far: 169808.0
If we subtract 4296 from 4721, we get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Step 9:
537 can be fit into 4250 7 times, resulting in a remainder of 491.
Record the quotient 7 as the next digit in the result. 
Result so far: 169808.7
Subtracting 3759 from 4250 leaves us with 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Moving on to step 10:
If we divide 4910 by 537, we get 9 and a remainder of 77.
Write down 9 as next digit of the result. 
Result so far: 169808.79
If we subtract 4833 from 4910, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 11:
537 can be fit into 770 1 times, resulting in a remainder of 233.
The next digit of our result is 1. 
Result so far: 169808.791
Subtract 537 from 770 to get 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Advancing to step 12:
2330 divided by 537 is 4 with a remainder of 182.
Use 4 as the next digit of our solution. 
Result so far: 169808.7914
Deduct 2148 from 2330 and we're left with 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Going ahead to step 13:
The number 537 fits into 1820 3 times, leaving a remainder of 209.
The next digit of our result is 3. 
Result so far: 169808.79143
Deduct 1611 from 1820 and we're left with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

On to step 14:
If we divide 2090 by 537, we get 3 and a remainder of 479.
Record the quotient 3 as the next digit in the result. 
Result so far: 169808.791433
Deduct 1611 from 2090 and we're left with 479.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

The final result is 169808.791433 with a remainder of 4.79e-05.