78610 ÷ 57 
The aim is to understand the frequency of 57 in 78610.

Moving on to step 1:
When dividing 7 by 57, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 57

Advancing to step 2:
78 divided by 57 is 1 with a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 21 after subtracting 57 from 78.
Bring next digit (6) of the dividend behind the 21 and repeat the process: 216 / 57

Let's proceed to step 3:
57 can be fit into 216 3 times, resulting in a remainder of 45.
The next digit of our result is 3. 
Result so far: 13.0
Deduct 171 from 216 and we're left with 45.
Fetch the next digit (1) from the dividend, attach it to 45 and continue: 451 / 57

On to step 4:
57 can be fit into 451 7 times, resulting in a remainder of 52.
Use 7 as the next digit of our solution. 
Result so far: 137.0
The remainder is 52 after subtracting 399 from 451.
Take the next digit (0) from the dividend and append it to 52, then repeat: 520 / 57

On to step 5:
57 can be fit into 520 9 times, resulting in a remainder of 7.
The next digit of our result is 9. 
Result so far: 1379.0
Subtract 513 from 520 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 6:
57 goes into 70 1 times with a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 1379.1
If we subtract 57 from 70, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 7:
When dividing 130 by 57, we get 2 with a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 1379.12
The remainder is 16 after subtracting 114 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
160 divided by 57 is 2 with a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 1379.122
The remainder is 46 after subtracting 114 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final outcome is 1379.122, with a leftover of 0.0046.