We look at the division of 391668 by 61 
The aim is to understand the frequency of 61 in 391668.

Advancing to step 1:
61 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 61

On to step 2:
When dividing 39 by 61, we get 0 with a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Bring next digit (1) of the dividend behind the 39 and repeat the process: 391 / 61

Step 3:
The number 61 fits into 391 6 times, leaving a remainder of 25.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 366 from 391, we get 25.
Grab the next digit (6) from the dividend, add it to 25, then carry on: 256 / 61

On to step 4:
61 goes into 256 4 times with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 64.0
The remainder is 12 after subtracting 244 from 256.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 61

Step 5:
When dividing 126 by 61, we get 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 642.0
Deduct 122 from 126 and we're left with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 61

Let's proceed to step 6:
61 can be fit into 48 0 times, resulting in a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 6420.0
Deduct 0 from 48 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 7:
61 can be fit into 480 7 times, resulting in a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 6420.7
Deduct 427 from 480 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 8:
61 goes into 530 8 times with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 6420.78
Subtract 488 from 530 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 9:
The number 61 fits into 420 6 times, leaving a remainder of 54.
The next digit of our result is 6. 
Result so far: 6420.786
If we take 366 away from 420, we end up 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.

Moving on to step 10:
61 can be fit into 540 8 times, resulting in a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 6420.7868
Deduct 488 from 540 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 11:
520 divided by 61 is 8 with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 6420.78688
If we subtract 488 from 520, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 6420.78688 and a remainder of 3.2e-05.