Let's divide 348638 by 91
The aim is to understand the frequency of 91 in 348638.

Going ahead to step 1:
91 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 91

On to step 2:
91 goes into 34 0 times with a remainder of 34.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 34 after subtracting 0 from 34.
Include the next digit (8) from the dividend after 34, then repeat: 348 / 91

On to step 3:
When dividing 348 by 91, we get 3 with a remainder of 75.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 273 from 348 to get 75.
Include the next digit (6) from the dividend after 75, then repeat: 756 / 91

Let's proceed to step 4:
91 can be fit into 756 8 times, resulting in a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Subtract 728 from 756 to get 28.
Append the next digit (3) from the dividend to 28 and continue with: 283 / 91

Let's proceed to step 5:
283 divided by 91 is 3 with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 383.0
Subtracting 273 from 283 leaves us with 10.
Bring next digit (8) of the dividend behind the 10 and repeat the process: 108 / 91

Advancing to step 6:
108 divided by 91 is 1 with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 3831.0
Subtract 91 from 108 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
When dividing 170 by 91, we get 1 with a remainder of 79.
The number 1 becomes the next digit in our result. 
Result so far: 3831.1
If we subtract 91 from 170, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 8:
If we divide 790 by 91, we get 8 and a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 3831.18
If we subtract 728 from 790, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 9:
620 divided by 91 is 6 with a remainder of 74.
The next digit of our result is 6. 
Result so far: 3831.186
Deduct 546 from 620 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 10:
If we divide 740 by 91, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 3831.1868
Subtracting 728 from 740 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 11:
If we divide 120 by 91, we get 1 and a remainder of 29.
The next digit of our result is 1. 
Result so far: 3831.18681
The remainder is 29 after subtracting 91 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 12:
91 can be fit into 290 3 times, resulting in a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 3831.186813
Subtract 273 from 290 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 13:
170 divided by 91 is 1 with a remainder of 79.
Write down 1 as next digit of the result. 
Result so far: 3831.1868131
The remainder is 79 after subtracting 91 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 14:
790 divided by 91 is 8 with a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 3831.18681318
Subtract 728 from 790 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The final result is 3831.18681318 with a remainder of 6.2e-08.