84621920 divided by 858 
The aim is to understand the frequency of 858 in 84621920.

Let's proceed to step 1:
When dividing 8 by 858, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 858

Moving on to step 2:
The number 858 fits into 84 0 times, leaving a remainder of 84.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 84 leaves us with 84.
Bring next digit (6) of the dividend behind the 84 and repeat the process: 846 / 858

Let's proceed to step 3:
858 can be fit into 846 0 times, resulting in a remainder of 846.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 846 leaves us with 846.
Append the next digit (2) from the dividend to 846 and continue with: 8462 / 858

Advancing to step 4:
The number 858 fits into 8462 9 times, leaving a remainder of 740.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 7722 from 8462, we get 740.
Append the next digit (1) from the dividend to 740 and continue with: 7401 / 858

Step 5:
When dividing 7401 by 858, we get 8 with a remainder of 537.
Put 8 as the next digit of the answer. 
Result so far: 98.0
Subtracting 6864 from 7401 leaves us with 537.
Append the next digit (9) from the dividend to 537 and continue with: 5379 / 858

On to step 6:
The number 858 fits into 5379 6 times, leaving a remainder of 231.
The number 6 becomes the next digit in our result. 
Result so far: 986.0
If we subtract 5148 from 5379, we get 231.
Fetch the next digit (2) from the dividend, attach it to 231 and continue: 2312 / 858

Going ahead to step 7:
The number 858 fits into 2312 2 times, leaving a remainder of 596.
Put 2 as the next digit of the answer. 
Result so far: 9862.0
The remainder is 596 after subtracting 1716 from 2312.
Take the next digit (0) from the dividend and append it to 596, then repeat: 5960 / 858

Advancing to step 8:
The number 858 fits into 5960 6 times, leaving a remainder of 812.
Write down 6 as next digit of the result. 
Result so far: 98626.0
Subtracting 5148 from 5960 leaves us with 812.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8120, and continue the process.

Going ahead to step 9:
858 goes into 8120 9 times with a remainder of 398.
Use 9 as the next digit of our solution. 
Result so far: 98626.9
Deduct 7722 from 8120 and we're left with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Going ahead to step 10:
858 goes into 3980 4 times with a remainder of 548.
Put 4 as the next digit of the answer. 
Result so far: 98626.94
If we take 3432 away from 3980, we end up with 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Let's proceed to step 11:
858 goes into 5480 6 times with a remainder of 332.
Record the quotient 6 as the next digit in the result. 
Result so far: 98626.946
Deduct 5148 from 5480 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

On to step 12:
When dividing 3320 by 858, we get 3 with a remainder of 746.
Put 3 as the next digit of the answer. 
Result so far: 98626.9463
Subtract 2574 from 3320 to get 746.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7460, and continue the process.

Going ahead to step 13:
The number 858 fits into 7460 8 times, leaving a remainder of 596.
The number 8 becomes the next digit in our result. 
Result so far: 98626.94638
Subtracting 6864 from 7460 leaves us with 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Moving on to step 14:
5960 divided by 858 is 6 with a remainder of 812.
The next digit of our result is 6. 
Result so far: 98626.946386
The remainder is 812 after subtracting 5148 from 5960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8120, and continue the process.

On to step 15:
858 can be fit into 8120 9 times, resulting in a remainder of 398.
Record the quotient 9 as the next digit in the result. 
Result so far: 98626.9463869
Subtract 7722 from 8120 to get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Moving on to step 16:
If we divide 3980 by 858, we get 4 and a remainder of 548.
The next digit of our result is 4. 
Result so far: 98626.94638694
The remainder is 548 after subtracting 3432 from 3980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

The final result is 98626.94638694 with a remainder of 5.48e-07.