We're dividing 21686 by 60 
The aim is to understand the frequency of 60 in 21686.

Advancing to step 1:
The number 60 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 60

Step 2:
60 can be fit into 21 0 times, resulting in a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Bring next digit (6) of the dividend behind the 21 and repeat the process: 216 / 60

Going ahead to step 3:
When dividing 216 by 60, we get 3 with a remainder of 36.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 180 away from 216, we end up with 36.
Bring next digit (8) of the dividend behind the 36 and repeat the process: 368 / 60

Moving on to step 4:
368 divided by 60 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 36.0
If we take 360 away from 368, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 60

On to step 5:
If we divide 86 by 60, we get 1 and a remainder of 26.
Record the quotient 1 as the next digit in the result. 
Result so far: 361.0
Subtracting 60 from 86 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 6:
260 divided by 60 is 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 361.4
Subtracting 240 from 260 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
60 can be fit into 200 3 times, resulting in a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 361.43
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
60 can be fit into 200 3 times, resulting in a remainder of 20.
The next digit of our result is 3. 
Result so far: 361.433
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 361.433, with a leftover of 0.002.