We look at the division of 21385021 by 716 
The aim is to understand the frequency of 716 in 21385021.

Moving on to step 1:
When dividing 2 by 716, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 716

Step 2:
716 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 716

Step 3:
213 divided by 716 is 0 with a remainder of 213.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 213, we get 213.
Include the next digit (8) from the dividend after 213, then repeat: 2138 / 716

Going ahead to step 4:
If we divide 2138 by 716, we get 2 and a remainder of 706.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 1432 from 2138 leaves us with 706.
Append the next digit (5) from the dividend to 706 and continue with: 7065 / 716

Advancing to step 5:
When dividing 7065 by 716, we get 9 with a remainder of 621.
The next digit of our result is 9. 
Result so far: 29.0
Subtracting 6444 from 7065 leaves us with 621.
Include the next digit (0) from the dividend after 621, then repeat: 6210 / 716

Let's proceed to step 6:
716 can be fit into 6210 8 times, resulting in a remainder of 482.
The next digit of our result is 8. 
Result so far: 298.0
The remainder is 482 after subtracting 5728 from 6210.
Fetch the next digit (2) from the dividend, attach it to 482 and continue: 4822 / 716

On to step 7:
4822 divided by 716 is 6 with a remainder of 526.
Write down 6 as next digit of the result. 
Result so far: 2986.0
Deduct 4296 from 4822 and we're left with 526.
Grab the next digit (1) from the dividend, add it to 526, then carry on: 5261 / 716

Step 8:
If we divide 5261 by 716, we get 7 and a remainder of 249.
Use 7 as the next digit of our solution. 
Result so far: 29867.0
Subtract 5012 from 5261 to get 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Going ahead to step 9:
716 can be fit into 2490 3 times, resulting in a remainder of 342.
The number 3 becomes the next digit in our result. 
Result so far: 29867.3
Subtract 2148 from 2490 to get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Moving on to step 10:
716 can be fit into 3420 4 times, resulting in a remainder of 556.
Put 4 as the next digit of the answer. 
Result so far: 29867.34
Deduct 2864 from 3420 and we're left with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Advancing to step 11:
If we divide 5560 by 716, we get 7 and a remainder of 548.
The number 7 becomes the next digit in our result. 
Result so far: 29867.347
Subtract 5012 from 5560 to get 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Advancing to step 12:
If we divide 5480 by 716, we get 7 and a remainder of 468.
Use 7 as the next digit of our solution. 
Result so far: 29867.3477
Subtracting 5012 from 5480 leaves us with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

In conclusion, the division gives 29867.3477 with a balance of 0.00468.