We're dividing 637649 by 61 
The aim is to understand the frequency of 61 in 637649.

On to step 1:
61 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 61

Going ahead to step 2:
61 can be fit into 63 1 times, resulting in a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 61 from 63, we get 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 61

Moving on to step 3:
When dividing 27 by 61, we get 0 with a remainder of 27.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 27 leaves us with 27.
Include the next digit (6) from the dividend after 27, then repeat: 276 / 61

Let's proceed to step 4:
If we divide 276 by 61, we get 4 and a remainder of 32.
Record the quotient 4 as the next digit in the result. 
Result so far: 104.0
If we subtract 244 from 276, we get 32.
Grab the next digit (4) from the dividend, add it to 32, then carry on: 324 / 61

Moving on to step 5:
The number 61 fits into 324 5 times, leaving a remainder of 19.
Write down 5 as next digit of the result. 
Result so far: 1045.0
If we subtract 305 from 324, we get 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 61

Going ahead to step 6:
When dividing 199 by 61, we get 3 with a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 10453.0
The remainder is 16 after subtracting 183 from 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 7:
When dividing 160 by 61, we get 2 with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 10453.2
If we subtract 122 from 160, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 8:
If we divide 380 by 61, we get 6 and a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 10453.26
Deduct 366 from 380 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 9:
61 goes into 140 2 times with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 10453.262
Subtracting 122 from 140 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 10:
180 divided by 61 is 2 with a remainder of 58.
Use 2 as the next digit of our solution. 
Result so far: 10453.2622
If we take 122 away from 180, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 10453.2622 with a remainder of 0.00058.