361764 ÷ 91 
The aim is to understand the frequency of 91 in 361764.

Step 1:
The number 91 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 91

Let's proceed to step 2:
36 divided by 91 is 0 with a remainder of 36.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 36 leaves us with 36.
Bring next digit (1) of the dividend behind the 36 and repeat the process: 361 / 91

Advancing to step 3:
If we divide 361 by 91, we get 3 and a remainder of 88.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 273 away from 361, we end up with 88.
Append the next digit (7) from the dividend to 88 and continue with: 887 / 91

Going ahead to step 4:
If we divide 887 by 91, we get 9 and a remainder of 68.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
Subtract 819 from 887 to get 68.
Take the next digit (6) from the dividend and append it to 68, then repeat: 686 / 91

Going ahead to step 5:
When dividing 686 by 91, we get 7 with a remainder of 49.
Write down 7 as next digit of the result. 
Result so far: 397.0
The remainder is 49 after subtracting 637 from 686.
Append the next digit (4) from the dividend to 49 and continue with: 494 / 91

Moving on to step 6:
When dividing 494 by 91, we get 5 with a remainder of 39.
The next digit of our result is 5. 
Result so far: 3975.0
If we subtract 455 from 494, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
The number 91 fits into 390 4 times, leaving a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 3975.4
Subtract 364 from 390 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 8:
When dividing 260 by 91, we get 2 with a remainder of 78.
Write down 2 as next digit of the result. 
Result so far: 3975.42
The remainder is 78 after subtracting 182 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 9:
When dividing 780 by 91, we get 8 with a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 3975.428
Subtracting 728 from 780 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 10:
520 divided by 91 is 5 with a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 3975.4285
If we take 455 away from 520, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 11:
650 divided by 91 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 3975.42857
The remainder is 13 after subtracting 637 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 12:
If we divide 130 by 91, we get 1 and a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 3975.428571
If we take 91 away from 130, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 13:
91 goes into 390 4 times with a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 3975.4285714
Deduct 364 from 390 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 14:
260 divided by 91 is 2 with a remainder of 78.
Record the quotient 2 as the next digit in the result. 
Result so far: 3975.42857142
If we take 182 away from 260, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The final result is 3975.42857142 with a remainder of 7.8e-08.