We divide 690951 by 91
The aim is to understand the frequency of 91 in 690951.

Going ahead to step 1:
The number 91 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 91

Advancing to step 2:
If we divide 69 by 91, we get 0 and a remainder of 69.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 69 after subtracting 0 from 69.
Fetch the next digit (0) from the dividend, attach it to 69 and continue: 690 / 91

Let's proceed to step 3:
91 can be fit into 690 7 times, resulting in a remainder of 53.
The next digit of our result is 7. 
Result so far: 7.0
If we take 637 away from 690, we end up with 53.
Take the next digit (9) from the dividend and append it to 53, then repeat: 539 / 91

Let's proceed to step 4:
When dividing 539 by 91, we get 5 with a remainder of 84.
The next digit of our result is 5. 
Result so far: 75.0
If we take 455 away from 539, we end up with 84.
Fetch the next digit (5) from the dividend, attach it to 84 and continue: 845 / 91

Moving on to step 5:
91 goes into 845 9 times with a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 759.0
Subtract 819 from 845 to get 26.
Append the next digit (1) from the dividend to 26 and continue with: 261 / 91

Advancing to step 6:
91 goes into 261 2 times with a remainder of 79.
Use 2 as the next digit of our solution. 
Result so far: 7592.0
Deduct 182 from 261 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 7:
91 goes into 790 8 times with a remainder of 62.
The number 8 becomes the next digit in our result. 
Result so far: 7592.8
Subtracting 728 from 790 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 8:
The number 91 fits into 620 6 times, leaving a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 7592.86
Subtracting 546 from 620 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 9:
740 divided by 91 is 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 7592.868
If we subtract 728 from 740, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 10:
The number 91 fits into 120 1 times, leaving a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 7592.8681
Subtracting 91 from 120 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 11:
The number 91 fits into 290 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 7592.86813
Subtract 273 from 290 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 12:
If we divide 170 by 91, we get 1 and a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 7592.868131
If we take 91 away from 170, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 13:
When dividing 790 by 91, we get 8 with a remainder of 62.
The next digit of our result is 8. 
Result so far: 7592.8681318
The remainder is 62 after subtracting 728 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 14:
If we divide 620 by 91, we get 6 and a remainder of 74.
Use 6 as the next digit of our solution. 
Result so far: 7592.86813186
Deduct 546 from 620 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

After the division, we end up with 7592.86813186 and a remainder of 7.4e-08.