Let's divide 18396977 by 721
The aim is to understand the frequency of 721 in 18396977.

On to step 1:
1 divided by 721 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 721

Step 2:
18 divided by 721 is 0 with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 721

On to step 3:
If we divide 183 by 721, we get 0 and a remainder of 183.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 183 and we're left with 183.
Include the next digit (9) from the dividend after 183, then repeat: 1839 / 721

Let's proceed to step 4:
The number 721 fits into 1839 2 times, leaving a remainder of 397.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 397 after subtracting 1442 from 1839.
Fetch the next digit (6) from the dividend, attach it to 397 and continue: 3976 / 721

Advancing to step 5:
The number 721 fits into 3976 5 times, leaving a remainder of 371.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
If we subtract 3605 from 3976, we get 371.
Bring next digit (9) of the dividend behind the 371 and repeat the process: 3719 / 721

On to step 6:
721 goes into 3719 5 times with a remainder of 114.
The next digit of our result is 5. 
Result so far: 255.0
If we take 3605 away from 3719, we end up with 114.
Bring next digit (7) of the dividend behind the 114 and repeat the process: 1147 / 721

Advancing to step 7:
The number 721 fits into 1147 1 times, leaving a remainder of 426.
Use 1 as the next digit of our solution. 
Result so far: 2551.0
If we take 721 away from 1147, we end up with 426.
Grab the next digit (7) from the dividend, add it to 426, then carry on: 4267 / 721

Moving on to step 8:
When dividing 4267 by 721, we get 5 with a remainder of 662.
Use 5 as the next digit of our solution. 
Result so far: 25515.0
Subtract 3605 from 4267 to get 662.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6620, and continue the process.

Going ahead to step 9:
The number 721 fits into 6620 9 times, leaving a remainder of 131.
Write down 9 as next digit of the result. 
Result so far: 25515.9
Subtracting 6489 from 6620 leaves us with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

On to step 10:
When dividing 1310 by 721, we get 1 with a remainder of 589.
The number 1 becomes the next digit in our result. 
Result so far: 25515.91
The remainder is 589 after subtracting 721 from 1310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5890, and continue the process.

Going ahead to step 11:
5890 divided by 721 is 8 with a remainder of 122.
The next digit of our result is 8. 
Result so far: 25515.918
Subtracting 5768 from 5890 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

On to step 12:
721 goes into 1220 1 times with a remainder of 499.
The next digit of our result is 1. 
Result so far: 25515.9181
If we subtract 721 from 1220, we get 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Let's proceed to step 13:
721 can be fit into 4990 6 times, resulting in a remainder of 664.
The number 6 becomes the next digit in our result. 
Result so far: 25515.91816
If we take 4326 away from 4990, we end up with 664.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6640, and continue the process.

On to step 14:
721 can be fit into 6640 9 times, resulting in a remainder of 151.
The next digit of our result is 9. 
Result so far: 25515.918169
Subtracting 6489 from 6640 leaves us with 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Let's proceed to step 15:
1510 divided by 721 is 2 with a remainder of 68.
The number 2 becomes the next digit in our result. 
Result so far: 25515.9181692
If we subtract 1442 from 1510, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 16:
680 divided by 721 is 0 with a remainder of 680.
The next digit of our result is 0. 
Result so far: 25515.9181692
Deduct 0 from 680 and we're left with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

The quotient of the division is 25515.9181692, and the remainder is 6.8e-07.