We divide 456190 by 91
The aim is to understand the frequency of 91 in 456190.

On to step 1:
4 divided by 91 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 91

Advancing to step 2:
If we divide 45 by 91, we get 0 and a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Grab the next digit (6) from the dividend, add it to 45, then carry on: 456 / 91

Advancing to step 3:
The number 91 fits into 456 5 times, leaving a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 455 from 456 leaves us with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 91

Going ahead to step 4:
11 divided by 91 is 0 with a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 50.0
The remainder is 11 after subtracting 0 from 11.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 91

On to step 5:
If we divide 119 by 91, we get 1 and a remainder of 28.
Use 1 as the next digit of our solution. 
Result so far: 501.0
The remainder is 28 after subtracting 91 from 119.
Append the next digit (0) from the dividend to 28 and continue with: 280 / 91

Let's proceed to step 6:
If we divide 280 by 91, we get 3 and a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 5013.0
Deduct 273 from 280 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
91 can be fit into 70 0 times, resulting in a remainder of 70.
The next digit of our result is 0. 
Result so far: 5013.0
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 8:
91 goes into 700 7 times with a remainder of 63.
The next digit of our result is 7. 
Result so far: 5013.07
If we take 637 away from 700, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 9:
If we divide 630 by 91, we get 6 and a remainder of 84.
Record the quotient 6 as the next digit in the result. 
Result so far: 5013.076
The remainder is 84 after subtracting 546 from 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 10:
If we divide 840 by 91, we get 9 and a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 5013.0769
Subtracting 819 from 840 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 11:
91 goes into 210 2 times with a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 5013.07692
The remainder is 28 after subtracting 182 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 12:
If we divide 280 by 91, we get 3 and a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 5013.076923
If we subtract 273 from 280, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 13:
91 can be fit into 70 0 times, resulting in a remainder of 70.
The next digit of our result is 0. 
Result so far: 5013.076923
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 14:
91 can be fit into 700 7 times, resulting in a remainder of 63.
Put 7 as the next digit of the answer. 
Result so far: 5013.07692307
The remainder is 63 after subtracting 637 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

The final outcome is 5013.07692307, with a leftover of 6.3e-08.