We divide 346820 by 91
The aim is to understand the frequency of 91 in 346820.

Moving on to step 1:
The number 91 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 91

On to step 2:
The number 91 fits into 34 0 times, leaving a remainder of 34.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 34, we get 34.
Append the next digit (6) from the dividend to 34 and continue with: 346 / 91

On to step 3:
If we divide 346 by 91, we get 3 and a remainder of 73.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 73 after subtracting 273 from 346.
Grab the next digit (8) from the dividend, add it to 73, then carry on: 738 / 91

Step 4:
91 can be fit into 738 8 times, resulting in a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 38.0
If we take 728 away from 738, we end up with 10.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 91

On to step 5:
If we divide 102 by 91, we get 1 and a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 381.0
Deduct 91 from 102 and we're left with 11.
Bring next digit (0) of the dividend behind the 11 and repeat the process: 110 / 91

Advancing to step 6:
The number 91 fits into 110 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 3811.0
If we subtract 91 from 110, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 7:
When dividing 190 by 91, we get 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 3811.2
Deduct 182 from 190 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 8:
91 goes into 80 0 times with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 3811.2
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 9:
91 can be fit into 800 8 times, resulting in a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 3811.208
The remainder is 72 after subtracting 728 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 10:
91 can be fit into 720 7 times, resulting in a remainder of 83.
Record the quotient 7 as the next digit in the result. 
Result so far: 3811.2087
If we take 637 away from 720, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 11:
830 divided by 91 is 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 3811.20879
Subtract 819 from 830 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 12:
91 goes into 110 1 times with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 3811.208791
Subtract 91 from 110 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 13:
190 divided by 91 is 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 3811.2087912
If we take 182 away from 190, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 14:
91 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 3811.2087912
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 3811.2087912 with a remainder of 8e-08.