We look at the division of 421427 by 61 
The aim is to understand the frequency of 61 in 421427.

Advancing to step 1:
61 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 61

Let's proceed to step 2:
61 can be fit into 42 0 times, resulting in a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Include the next digit (1) from the dividend after 42, then repeat: 421 / 61

On to step 3:
When dividing 421 by 61, we get 6 with a remainder of 55.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 366 from 421 leaves us with 55.
Take the next digit (4) from the dividend and append it to 55, then repeat: 554 / 61

Step 4:
61 goes into 554 9 times with a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 69.0
Deduct 549 from 554 and we're left with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 61

On to step 5:
61 goes into 52 0 times with a remainder of 52.
Write down 0 as next digit of the result. 
Result so far: 690.0
If we take 0 away from 52, we end up with 52.
Grab the next digit (7) from the dividend, add it to 52, then carry on: 527 / 61

Advancing to step 6:
527 divided by 61 is 8 with a remainder of 39.
Write down 8 as next digit of the result. 
Result so far: 6908.0
Deduct 488 from 527 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 7:
The number 61 fits into 390 6 times, leaving a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 6908.6
Subtract 366 from 390 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 8:
61 goes into 240 3 times with a remainder of 57.
The next digit of our result is 3. 
Result so far: 6908.63
If we subtract 183 from 240, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 9:
570 divided by 61 is 9 with a remainder of 21.
The next digit of our result is 9. 
Result so far: 6908.639
Deduct 549 from 570 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 10:
210 divided by 61 is 3 with a remainder of 27.
The next digit of our result is 3. 
Result so far: 6908.6393
If we take 183 away from 210, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 11:
If we divide 270 by 61, we get 4 and a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 6908.63934
The remainder is 26 after subtracting 244 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 12:
61 goes into 260 4 times with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 6908.639344
Deduct 244 from 260 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 6908.639344, with a leftover of 1.6e-06.