991357 divided by 61 
The aim is to understand the frequency of 61 in 991357.

Let's proceed to step 1:
When dividing 9 by 61, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 61

Step 2:
61 can be fit into 99 1 times, resulting in a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 61 from 99, we get 38.
Bring next digit (1) of the dividend behind the 38 and repeat the process: 381 / 61

Step 3:
When dividing 381 by 61, we get 6 with a remainder of 15.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
Subtracting 366 from 381 leaves us with 15.
Fetch the next digit (3) from the dividend, attach it to 15 and continue: 153 / 61

Moving on to step 4:
When dividing 153 by 61, we get 2 with a remainder of 31.
Write down 2 as next digit of the result. 
Result so far: 162.0
Subtracting 122 from 153 leaves us with 31.
Grab the next digit (5) from the dividend, add it to 31, then carry on: 315 / 61

Moving on to step 5:
315 divided by 61 is 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 1625.0
If we subtract 305 from 315, we get 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 61

Going ahead to step 6:
If we divide 107 by 61, we get 1 and a remainder of 46.
Use 1 as the next digit of our solution. 
Result so far: 16251.0
Deduct 61 from 107 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 7:
The number 61 fits into 460 7 times, leaving a remainder of 33.
The next digit of our result is 7. 
Result so far: 16251.7
Subtract 427 from 460 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 8:
61 goes into 330 5 times with a remainder of 25.
The next digit of our result is 5. 
Result so far: 16251.75
Subtracting 305 from 330 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 9:
If we divide 250 by 61, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 16251.754
If we subtract 244 from 250, we 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.

Step 10:
61 goes into 60 0 times with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 16251.754
The remainder is 60 after subtracting 0 from 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 11:
600 divided by 61 is 9 with a remainder of 51.
Write down 9 as next digit of the result. 
Result so far: 16251.75409
Deduct 549 from 600 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 12:
If we divide 510 by 61, we get 8 and a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 16251.754098
If we subtract 488 from 510, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 13:
61 can be fit into 220 3 times, resulting in a remainder of 37.
The next digit of our result is 3. 
Result so far: 16251.7540983
If we take 183 away from 220, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 14:
When dividing 370 by 61, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 16251.75409836
Subtracting 366 from 370 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.

After the division, we end up with 16251.75409836 and a remainder of 4e-09.