441445 ÷ 91 
The aim is to understand the frequency of 91 in 441445.

On to step 1:
91 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 91

Going ahead to step 2:
91 goes into 44 0 times with a remainder of 44.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 44, we end up with 44.
Include the next digit (1) from the dividend after 44, then repeat: 441 / 91

Advancing to step 3:
441 divided by 91 is 4 with a remainder of 77.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 77 after subtracting 364 from 441.
Grab the next digit (4) from the dividend, add it to 77, then carry on: 774 / 91

Moving on to step 4:
91 can be fit into 774 8 times, resulting in a remainder of 46.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Deduct 728 from 774 and we're left with 46.
Grab the next digit (4) from the dividend, add it to 46, then carry on: 464 / 91

On to step 5:
464 divided by 91 is 5 with a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 485.0
Deduct 455 from 464 and we're left with 9.
Bring next digit (5) of the dividend behind the 9 and repeat the process: 95 / 91

On to step 6:
If we divide 95 by 91, we get 1 and a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 4851.0
Subtracting 91 from 95 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 7:
The number 91 fits into 40 0 times, leaving a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 4851.0
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
400 divided by 91 is 4 with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 4851.04
Deduct 364 from 400 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 9:
If we divide 360 by 91, we get 3 and a remainder of 87.
Write down 3 as next digit of the result. 
Result so far: 4851.043
Subtract 273 from 360 to get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Advancing to step 10:
When dividing 870 by 91, we get 9 with a remainder of 51.
Record the quotient 9 as the next digit in the result. 
Result so far: 4851.0439
If we subtract 819 from 870, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 11:
The number 91 fits into 510 5 times, leaving a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 4851.04395
If we take 455 away from 510, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 12:
When dividing 550 by 91, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 4851.043956
Subtracting 546 from 550 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 13:
When dividing 40 by 91, we get 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 4851.043956
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 14:
If we divide 400 by 91, we get 4 and a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 4851.04395604
If we take 364 away from 400, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Our division results in 4851.04395604 with a remaining 3.6e-08.