990273 divided by 91 
The aim is to understand the frequency of 91 in 990273.

Let's proceed to step 1:
9 divided by 91 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 91

Advancing to step 2:
The number 91 fits into 99 1 times, leaving a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 91 from 99, we get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 91

Moving on to step 3:
The number 91 fits into 80 0 times, leaving a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 80, we end up with 80.
Bring next digit (2) of the dividend behind the 80 and repeat the process: 802 / 91

Let's proceed to step 4:
802 divided by 91 is 8 with a remainder of 74.
Write down 8 as next digit of the result. 
Result so far: 108.0
Deduct 728 from 802 and we're left with 74.
Grab the next digit (7) from the dividend, add it to 74, then carry on: 747 / 91

Step 5:
91 goes into 747 8 times with a remainder of 19.
Use 8 as the next digit of our solution. 
Result so far: 1088.0
Subtract 728 from 747 to get 19.
Grab the next digit (3) from the dividend, add it to 19, then carry on: 193 / 91

Step 6:
If we divide 193 by 91, we get 2 and a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 10882.0
If we subtract 182 from 193, we 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.

Going ahead to step 7:
If we divide 110 by 91, we get 1 and a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 10882.1
Deduct 91 from 110 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 8:
91 goes into 190 2 times with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 10882.12
Subtract 182 from 190 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
91 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 10882.12
If we take 0 away from 80, we end up 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 10:
91 goes into 800 8 times with a remainder of 72.
The next digit of our result is 8. 
Result so far: 10882.1208
Subtracting 728 from 800 leaves us with 72.
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 11:
720 divided by 91 is 7 with a remainder of 83.
Write down 7 as next digit of the result. 
Result so far: 10882.12087
The remainder is 83 after subtracting 637 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 12:
The number 91 fits into 830 9 times, leaving a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 10882.120879
Subtracting 819 from 830 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 13:
110 divided by 91 is 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 10882.1208791
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.

Going ahead to step 14:
If we divide 190 by 91, we get 2 and a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 10882.12087912
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.

The final result is 10882.12087912 with a remainder of 8e-09.