We're dividing 21055485 by 715 
The aim is to understand the frequency of 715 in 21055485.

Let's proceed to step 1:
715 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 715

Step 2:
715 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
If we take 0 away from 21, we end up with 21.
Include the next digit (0) from the dividend after 21, then repeat: 210 / 715

Advancing to step 3:
The number 715 fits into 210 0 times, leaving a remainder of 210.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 210 after subtracting 0 from 210.
Include the next digit (5) from the dividend after 210, then repeat: 2105 / 715

Advancing to step 4:
2105 divided by 715 is 2 with a remainder of 675.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 675 after subtracting 1430 from 2105.
Fetch the next digit (5) from the dividend, attach it to 675 and continue: 6755 / 715

Step 5:
If we divide 6755 by 715, we get 9 and a remainder of 320.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
Deduct 6435 from 6755 and we're left with 320.
Bring next digit (4) of the dividend behind the 320 and repeat the process: 3204 / 715

Step 6:
If we divide 3204 by 715, we get 4 and a remainder of 344.
Record the quotient 4 as the next digit in the result. 
Result so far: 294.0
If we take 2860 away from 3204, we end up with 344.
Include the next digit (8) from the dividend after 344, then repeat: 3448 / 715

Going ahead to step 7:
The number 715 fits into 3448 4 times, leaving a remainder of 588.
Record the quotient 4 as the next digit in the result. 
Result so far: 2944.0
If we take 2860 away from 3448, we end up with 588.
Include the next digit (5) from the dividend after 588, then repeat: 5885 / 715

On to step 8:
When dividing 5885 by 715, we get 8 with a remainder of 165.
Put 8 as the next digit of the answer. 
Result so far: 29448.0
The remainder is 165 after subtracting 5720 from 5885.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 9:
The number 715 fits into 1650 2 times, leaving a remainder of 220.
The number 2 becomes the next digit in our result. 
Result so far: 29448.2
Subtracting 1430 from 1650 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 10:
When dividing 2200 by 715, we get 3 with a remainder of 55.
Put 3 as the next digit of the answer. 
Result so far: 29448.23
If we subtract 2145 from 2200, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 11:
715 goes into 550 0 times with a remainder of 550.
Use 0 as the next digit of our solution. 
Result so far: 29448.23
If we take 0 away from 550, we end up with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Step 12:
5500 divided by 715 is 7 with a remainder of 495.
Put 7 as the next digit of the answer. 
Result so far: 29448.2307
The remainder is 495 after subtracting 5005 from 5500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Moving on to step 13:
4950 divided by 715 is 6 with a remainder of 660.
The number 6 becomes the next digit in our result. 
Result so far: 29448.23076
If we subtract 4290 from 4950, we get 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Going ahead to step 14:
The number 715 fits into 6600 9 times, leaving a remainder of 165.
Put 9 as the next digit of the answer. 
Result so far: 29448.230769
The remainder is 165 after subtracting 6435 from 6600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 15:
If we divide 1650 by 715, we get 2 and a remainder of 220.
Write down 2 as next digit of the result. 
Result so far: 29448.2307692
If we take 1430 away from 1650, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 16:
2200 divided by 715 is 3 with a remainder of 55.
The number 3 becomes the next digit in our result. 
Result so far: 29448.23076923
The remainder is 55 after subtracting 2145 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

The quotient of the division is 29448.23076923, and the remainder is 5.5e-08.