74597519 ÷ 721 
The aim is to understand the frequency of 721 in 74597519.

Advancing to step 1:
721 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 721

On to step 2:
The number 721 fits into 74 0 times, leaving a remainder of 74.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 74 to get 74.
Take the next digit (5) from the dividend and append it to 74, then repeat: 745 / 721

Let's proceed to step 3:
721 can be fit into 745 1 times, resulting in a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 721 from 745 and we're left with 24.
Bring next digit (9) of the dividend behind the 24 and repeat the process: 249 / 721

Moving on to step 4:
The number 721 fits into 249 0 times, leaving a remainder of 249.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 249 to get 249.
Include the next digit (7) from the dividend after 249, then repeat: 2497 / 721

Let's proceed to step 5:
721 can be fit into 2497 3 times, resulting in a remainder of 334.
Use 3 as the next digit of our solution. 
Result so far: 103.0
If we take 2163 away from 2497, we end up with 334.
Fetch the next digit (5) from the dividend, attach it to 334 and continue: 3345 / 721

Moving on to step 6:
When dividing 3345 by 721, we get 4 with a remainder of 461.
Write down 4 as next digit of the result. 
Result so far: 1034.0
Subtracting 2884 from 3345 leaves us with 461.
Bring next digit (1) of the dividend behind the 461 and repeat the process: 4611 / 721

On to step 7:
721 goes into 4611 6 times with a remainder of 285.
The number 6 becomes the next digit in our result. 
Result so far: 10346.0
Subtract 4326 from 4611 to get 285.
Bring next digit (9) of the dividend behind the 285 and repeat the process: 2859 / 721

Let's proceed to step 8:
721 can be fit into 2859 3 times, resulting in a remainder of 696.
Record the quotient 3 as the next digit in the result. 
Result so far: 103463.0
Deduct 2163 from 2859 and we're left with 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Step 9:
When dividing 6960 by 721, we get 9 with a remainder of 471.
The next digit of our result is 9. 
Result so far: 103463.9
Subtracting 6489 from 6960 leaves us with 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

On to step 10:
4710 divided by 721 is 6 with a remainder of 384.
Put 6 as the next digit of the answer. 
Result so far: 103463.96
Deduct 4326 from 4710 and we're left with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Moving on to step 11:
721 can be fit into 3840 5 times, resulting in a remainder of 235.
The next digit of our result is 5. 
Result so far: 103463.965
The remainder is 235 after subtracting 3605 from 3840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Moving on to step 12:
When dividing 2350 by 721, we get 3 with a remainder of 187.
Record the quotient 3 as the next digit in the result. 
Result so far: 103463.9653
The remainder is 187 after subtracting 2163 from 2350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Step 13:
1870 divided by 721 is 2 with a remainder of 428.
Record the quotient 2 as the next digit in the result. 
Result so far: 103463.96532
The remainder is 428 after subtracting 1442 from 1870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Going ahead to step 14:
721 goes into 4280 5 times with a remainder of 675.
The next digit of our result is 5. 
Result so far: 103463.965325
If we subtract 3605 from 4280, we get 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Step 15:
The number 721 fits into 6750 9 times, leaving a remainder of 261.
Write down 9 as next digit of the result. 
Result so far: 103463.9653259
If we subtract 6489 from 6750, we get 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

Moving on to step 16:
721 can be fit into 2610 3 times, resulting in a remainder of 447.
The next digit of our result is 3. 
Result so far: 103463.96532593
If we subtract 2163 from 2610, we get 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

The final result is 103463.96532593 with a remainder of 4.47e-07.