21174167 divided by 858 
The aim is to understand the frequency of 858 in 21174167.

On to step 1:
2 divided by 858 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 858

Going ahead to step 2:
858 can be fit into 21 0 times, resulting in a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (1) from the dividend and append it to 21, then repeat: 211 / 858

Advancing to step 3:
The number 858 fits into 211 0 times, leaving a remainder of 211.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 211, we get 211.
Grab the next digit (7) from the dividend, add it to 211, then carry on: 2117 / 858

Step 4:
2117 divided by 858 is 2 with a remainder of 401.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 1716 from 2117 leaves us with 401.
Bring next digit (4) of the dividend behind the 401 and repeat the process: 4014 / 858

On to step 5:
858 goes into 4014 4 times with a remainder of 582.
The next digit of our result is 4. 
Result so far: 24.0
Subtract 3432 from 4014 to get 582.
Bring next digit (1) of the dividend behind the 582 and repeat the process: 5821 / 858

Step 6:
If we divide 5821 by 858, we get 6 and a remainder of 673.
The next digit of our result is 6. 
Result so far: 246.0
Deduct 5148 from 5821 and we're left with 673.
Include the next digit (6) from the dividend after 673, then repeat: 6736 / 858

Moving on to step 7:
858 goes into 6736 7 times with a remainder of 730.
The number 7 becomes the next digit in our result. 
Result so far: 2467.0
Subtract 6006 from 6736 to get 730.
Grab the next digit (7) from the dividend, add it to 730, then carry on: 7307 / 858

Let's proceed to step 8:
The number 858 fits into 7307 8 times, leaving a remainder of 443.
Record the quotient 8 as the next digit in the result. 
Result so far: 24678.0
Deduct 6864 from 7307 and we're left with 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Let's proceed to step 9:
858 can be fit into 4430 5 times, resulting in a remainder of 140.
Use 5 as the next digit of our solution. 
Result so far: 24678.5
Subtract 4290 from 4430 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 10:
The number 858 fits into 1400 1 times, leaving a remainder of 542.
Use 1 as the next digit of our solution. 
Result so far: 24678.51
Subtracting 858 from 1400 leaves us with 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

Step 11:
If we divide 5420 by 858, we get 6 and a remainder of 272.
The next digit of our result is 6. 
Result so far: 24678.516
Subtracting 5148 from 5420 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 12:
858 can be fit into 2720 3 times, resulting in a remainder of 146.
Write down 3 as next digit of the result. 
Result so far: 24678.5163
Deduct 2574 from 2720 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Going ahead to step 13:
When dividing 1460 by 858, we get 1 with a remainder of 602.
Write down 1 as next digit of the result. 
Result so far: 24678.51631
Subtracting 858 from 1460 leaves us with 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

Advancing to step 14:
858 can be fit into 6020 7 times, resulting in a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 24678.516317
The remainder is 14 after subtracting 6006 from 6020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 15:
140 divided by 858 is 0 with a remainder of 140.
Write down 0 as next digit of the result. 
Result so far: 24678.516317
Deduct 0 from 140 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 16:
The number 858 fits into 1400 1 times, leaving a remainder of 542.
Record the quotient 1 as the next digit in the result. 
Result so far: 24678.51631701
The remainder is 542 after subtracting 858 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

The final outcome is 24678.51631701, with a leftover of 5.42e-07.