We're dividing 21207308 by 723 
The aim is to understand the frequency of 723 in 21207308.

Let's proceed to step 1:
If we divide 2 by 723, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 723

Moving on to step 2:
When dividing 21 by 723, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Include the next digit (2) from the dividend after 21, then repeat: 212 / 723

Going ahead to step 3:
723 can be fit into 212 0 times, resulting in a remainder of 212.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 212, we end up with 212.
Grab the next digit (0) from the dividend, add it to 212, then carry on: 2120 / 723

Moving on to step 4:
723 can be fit into 2120 2 times, resulting in a remainder of 674.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 674 after subtracting 1446 from 2120.
Append the next digit (7) from the dividend to 674 and continue with: 6747 / 723

Step 5:
6747 divided by 723 is 9 with a remainder of 240.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
If we take 6507 away from 6747, we end up with 240.
Bring next digit (3) of the dividend behind the 240 and repeat the process: 2403 / 723

Let's proceed to step 6:
If we divide 2403 by 723, we get 3 and a remainder of 234.
The next digit of our result is 3. 
Result so far: 293.0
Subtracting 2169 from 2403 leaves us with 234.
Include the next digit (0) from the dividend after 234, then repeat: 2340 / 723

Advancing to step 7:
723 goes into 2340 3 times with a remainder of 171.
Use 3 as the next digit of our solution. 
Result so far: 2933.0
Deduct 2169 from 2340 and we're left with 171.
Include the next digit (8) from the dividend after 171, then repeat: 1718 / 723

Let's proceed to step 8:
1718 divided by 723 is 2 with a remainder of 272.
Record the quotient 2 as the next digit in the result. 
Result so far: 29332.0
The remainder is 272 after subtracting 1446 from 1718.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 9:
The number 723 fits into 2720 3 times, leaving a remainder of 551.
Record the quotient 3 as the next digit in the result. 
Result so far: 29332.3
The remainder is 551 after subtracting 2169 from 2720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

Step 10:
The number 723 fits into 5510 7 times, leaving a remainder of 449.
The next digit of our result is 7. 
Result so far: 29332.37
Subtracting 5061 from 5510 leaves us with 449.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4490, and continue the process.

Going ahead to step 11:
723 goes into 4490 6 times with a remainder of 152.
The number 6 becomes the next digit in our result. 
Result so far: 29332.376
Deduct 4338 from 4490 and we're left with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Going ahead to step 12:
723 goes into 1520 2 times with a remainder of 74.
The next digit of our result is 2. 
Result so far: 29332.3762
If we take 1446 away from 1520, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 13:
723 goes into 740 1 times with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 29332.37621
Subtracting 723 from 740 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 14:
170 divided by 723 is 0 with a remainder of 170.
Record the quotient 0 as the next digit in the result. 
Result so far: 29332.37621
If we subtract 0 from 170, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Step 15:
The number 723 fits into 1700 2 times, leaving a remainder of 254.
Write down 2 as next digit of the result. 
Result so far: 29332.3762102
The remainder is 254 after subtracting 1446 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 16:
2540 divided by 723 is 3 with a remainder of 371.
The next digit of our result is 3. 
Result so far: 29332.37621023
If we take 2169 away from 2540, we end up with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Our division results in 29332.37621023 with a remaining 3.71e-07.