We're dividing 645159 by 61 
The aim is to understand the frequency of 61 in 645159.

Moving on to step 1:
When dividing 6 by 61, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 61

On to step 2:
64 divided by 61 is 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 61 from 64 leaves us with 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 61

Going ahead to step 3:
When dividing 35 by 61, we get 0 with a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we take 0 away from 35, we end up with 35.
Grab the next digit (1) from the dividend, add it to 35, then carry on: 351 / 61

Step 4:
If we divide 351 by 61, we get 5 and a remainder of 46.
Record the quotient 5 as the next digit in the result. 
Result so far: 105.0
The remainder is 46 after subtracting 305 from 351.
Bring next digit (5) of the dividend behind the 46 and repeat the process: 465 / 61

Step 5:
The number 61 fits into 465 7 times, leaving a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 1057.0
Deduct 427 from 465 and we're left with 38.
Append the next digit (9) from the dividend to 38 and continue with: 389 / 61

Let's proceed to step 6:
61 can be fit into 389 6 times, resulting in a remainder of 23.
The number 6 becomes the next digit in our result. 
Result so far: 10576.0
If we subtract 366 from 389, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 7:
230 divided by 61 is 3 with a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 10576.3
If we subtract 183 from 230, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 8:
When dividing 470 by 61, we get 7 with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 10576.37
Subtracting 427 from 470 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 9:
When dividing 430 by 61, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 10576.377
The remainder is 3 after subtracting 427 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

In conclusion, the division gives 10576.377 with a balance of 0.0003.