We divide 893990 by 91
The aim is to understand the frequency of 91 in 893990.

Going ahead to step 1:
91 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 91

Moving on to step 2:
When dividing 89 by 91, we get 0 with a remainder of 89.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 89, we get 89.
Include the next digit (3) from the dividend after 89, then repeat: 893 / 91

Going ahead to step 3:
91 can be fit into 893 9 times, resulting in a remainder of 74.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we take 819 away from 893, we end up with 74.
Fetch the next digit (9) from the dividend, attach it to 74 and continue: 749 / 91

Step 4:
749 divided by 91 is 8 with a remainder of 21.
The number 8 becomes the next digit in our result. 
Result so far: 98.0
Deduct 728 from 749 and we're left with 21.
Append the next digit (9) from the dividend to 21 and continue with: 219 / 91

Let's proceed to step 5:
219 divided by 91 is 2 with a remainder of 37.
Record the quotient 2 as the next digit in the result. 
Result so far: 982.0
Deduct 182 from 219 and we're left with 37.
Include the next digit (0) from the dividend after 37, then repeat: 370 / 91

Moving on to step 6:
When dividing 370 by 91, we get 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 9824.0
Subtract 364 from 370 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
60 divided by 91 is 0 with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 9824.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 8:
When dividing 600 by 91, we get 6 with a remainder of 54.
The next digit of our result is 6. 
Result so far: 9824.06
Deduct 546 from 600 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 9:
540 divided by 91 is 5 with a remainder of 85.
The next digit of our result is 5. 
Result so far: 9824.065
The remainder is 85 after subtracting 455 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 10:
The number 91 fits into 850 9 times, leaving a remainder of 31.
The next digit of our result is 9. 
Result so far: 9824.0659
Subtract 819 from 850 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 11:
The number 91 fits into 310 3 times, leaving a remainder of 37.
The next digit of our result is 3. 
Result so far: 9824.06593
The remainder is 37 after subtracting 273 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 12:
If we divide 370 by 91, we get 4 and a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 9824.065934
If we take 364 away from 370, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 13:
When dividing 60 by 91, we get 0 with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 9824.065934
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
The number 91 fits into 600 6 times, leaving a remainder of 54.
Put 6 as the next digit of the answer. 
Result so far: 9824.06593406
Subtracting 546 from 600 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 9824.06593406, with a leftover of 5.4e-08.