858030 ÷ 31 
The aim is to understand the frequency of 31 in 858030.

Advancing to step 1:
8 divided by 31 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 31

On to step 2:
When dividing 85 by 31, we get 2 with a remainder of 23.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 23 after subtracting 62 from 85.
Include the next digit (8) from the dividend after 23, then repeat: 238 / 31

Let's proceed to step 3:
31 goes into 238 7 times with a remainder of 21.
The next digit of our result is 7. 
Result so far: 27.0
Subtracting 217 from 238 leaves us with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 31

Advancing to step 4:
If we divide 210 by 31, we get 6 and a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 276.0
The remainder is 24 after subtracting 186 from 210.
Fetch the next digit (3) from the dividend, attach it to 24 and continue: 243 / 31

Moving on to step 5:
The number 31 fits into 243 7 times, leaving a remainder of 26.
The next digit of our result is 7. 
Result so far: 2767.0
If we subtract 217 from 243, we get 26.
Bring next digit (0) of the dividend behind the 26 and repeat the process: 260 / 31

Advancing to step 6:
31 can be fit into 260 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 27678.0
If we take 248 away from 260, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
When dividing 120 by 31, we get 3 with a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 27678.3
Deduct 93 from 120 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 8:
31 goes into 270 8 times with a remainder of 22.
The next digit of our result is 8. 
Result so far: 27678.38
Subtracting 248 from 270 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 9:
31 can be fit into 220 7 times, resulting in a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 27678.387
Deduct 217 from 220 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 10:
31 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 27678.387
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 11:
31 goes into 300 9 times with a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 27678.38709
If we take 279 away from 300, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 12:
31 goes into 210 6 times with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 27678.387096
The remainder is 24 after subtracting 186 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 13:
When dividing 240 by 31, we get 7 with a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 27678.3870967
If we subtract 217 from 240, 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.

Step 14:
31 goes into 230 7 times with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 27678.38709677
Subtract 217 from 230 to 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.

After the division, we end up with 27678.38709677 and a remainder of 1.3e-08.