We look at the division of 751609 by 61 
The aim is to understand the frequency of 61 in 751609.

On to step 1:
When dividing 7 by 61, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 61

Step 2:
61 can be fit into 75 1 times, resulting in a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 61 from 75 and we're left with 14.
Include the next digit (1) from the dividend after 14, then repeat: 141 / 61

Let's proceed to step 3:
The number 61 fits into 141 2 times, leaving a remainder of 19.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 122 from 141 and we're left with 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 61

Step 4:
When dividing 196 by 61, we get 3 with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 123.0
Subtract 183 from 196 to get 13.
Grab the next digit (0) from the dividend, add it to 13, then carry on: 130 / 61

Going ahead to step 5:
When dividing 130 by 61, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 1232.0
If we take 122 away from 130, we end up with 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 61

Let's proceed to step 6:
89 divided by 61 is 1 with a remainder of 28.
Record the quotient 1 as the next digit in the result. 
Result so far: 12321.0
The remainder is 28 after subtracting 61 from 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 7:
The number 61 fits into 280 4 times, leaving a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 12321.4
Subtracting 244 from 280 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 8:
When dividing 360 by 61, we get 5 with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 12321.45
Subtract 305 from 360 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 9:
When dividing 550 by 61, we get 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 12321.459
The remainder is 1 after subtracting 549 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 10:
The number 61 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 12321.459
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
61 can be fit into 100 1 times, resulting in a remainder of 39.
The next digit of our result is 1. 
Result so far: 12321.45901
Subtracting 61 from 100 leaves us 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.

Step 12:
390 divided by 61 is 6 with a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 12321.459016
The remainder is 24 after subtracting 366 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 13:
240 divided by 61 is 3 with a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 12321.4590163
Subtracting 183 from 240 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 14:
When dividing 570 by 61, we get 9 with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 12321.45901639
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.

The final result is 12321.45901639 with a remainder of 2.1e-08.