615099 ÷ 60 
The aim is to understand the frequency of 60 in 615099.

Let's proceed to step 1:
60 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 60

Going ahead to step 2:
When dividing 61 by 60, we get 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 1 after subtracting 60 from 61.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 60

Step 3:
The number 60 fits into 15 0 times, leaving a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 15 leaves us with 15.
Include the next digit (0) from the dividend after 15, then repeat: 150 / 60

On to step 4:
150 divided by 60 is 2 with a remainder of 30.
Use 2 as the next digit of our solution. 
Result so far: 102.0
If we subtract 120 from 150, we get 30.
Grab the next digit (9) from the dividend, add it to 30, then carry on: 309 / 60

Moving on to step 5:
When dividing 309 by 60, we get 5 with a remainder of 9.
The next digit of our result is 5. 
Result so far: 1025.0
If we subtract 300 from 309, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 60

Advancing to step 6:
If we divide 99 by 60, we get 1 and a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 10251.0
The remainder is 39 after subtracting 60 from 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 7:
390 divided by 60 is 6 with a remainder of 30.
The next digit of our result is 6. 
Result so far: 10251.6
Deduct 360 from 390 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 8:
300 divided by 60 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 10251.65
If we subtract 300 from 300, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
The number 60 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10251.65
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
If we divide 0 by 60, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 10251.65
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 10251.65 with a remainder of 0.0.