We're dividing 51013459 by 61 
The aim is to understand the frequency of 61 in 51013459.

Step 1:
When dividing 5 by 61, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 61

Moving on to step 2:
The number 61 fits into 51 0 times, leaving a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Take the next digit (0) from the dividend and append it to 51, then repeat: 510 / 61

Step 3:
61 can be fit into 510 8 times, resulting in a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 488 from 510 leaves us with 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 61

Step 4:
When dividing 221 by 61, we get 3 with a remainder of 38.
The next digit of our result is 3. 
Result so far: 83.0
Subtracting 183 from 221 leaves us with 38.
Grab the next digit (3) from the dividend, add it to 38, then carry on: 383 / 61

Moving on to step 5:
61 goes into 383 6 times with a remainder of 17.
Write down 6 as next digit of the result. 
Result so far: 836.0
Subtracting 366 from 383 leaves us with 17.
Fetch the next digit (4) from the dividend, attach it to 17 and continue: 174 / 61

Going ahead to step 6:
61 goes into 174 2 times with a remainder of 52.
Use 2 as the next digit of our solution. 
Result so far: 8362.0
Subtracting 122 from 174 leaves us with 52.
Fetch the next digit (5) from the dividend, attach it to 52 and continue: 525 / 61

Going ahead to step 7:
The number 61 fits into 525 8 times, leaving a remainder of 37.
Write down 8 as next digit of the result. 
Result so far: 83628.0
Subtracting 488 from 525 leaves us with 37.
Grab the next digit (9) from the dividend, add it to 37, then carry on: 379 / 61

Going ahead to step 8:
61 can be fit into 379 6 times, resulting in a remainder of 13.
The next digit of our result is 6. 
Result so far: 836286.0
Subtract 366 from 379 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 9:
When dividing 130 by 61, we get 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 836286.2
If we take 122 away from 130, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
61 goes into 80 1 times with a remainder of 19.
The next digit of our result is 1. 
Result so far: 836286.21
If we take 61 away from 80, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 11:
61 goes into 190 3 times with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 836286.213
Deduct 183 from 190 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 12:
61 goes into 70 1 times with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 836286.2131
Deduct 61 from 70 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 13:
The number 61 fits into 90 1 times, leaving a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 836286.21311
Subtracting 61 from 90 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.

The final outcome is 836286.21311, with a leftover of 2.9e-05.