8638409 ÷ 735 
The aim is to understand the frequency of 735 in 8638409.

Moving on to step 1:
735 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 735

Advancing to step 2:
When dividing 86 by 735, we get 0 with a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Include the next digit (3) from the dividend after 86, then repeat: 863 / 735

Advancing to step 3:
If we divide 863 by 735, we get 1 and a remainder of 128.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 735 from 863 to get 128.
Append the next digit (8) from the dividend to 128 and continue with: 1288 / 735

Advancing to step 4:
735 goes into 1288 1 times with a remainder of 553.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Deduct 735 from 1288 and we're left with 553.
Bring next digit (4) of the dividend behind the 553 and repeat the process: 5534 / 735

Advancing to step 5:
735 can be fit into 5534 7 times, resulting in a remainder of 389.
Record the quotient 7 as the next digit in the result. 
Result so far: 117.0
Subtract 5145 from 5534 to get 389.
Fetch the next digit (0) from the dividend, attach it to 389 and continue: 3890 / 735

Let's proceed to step 6:
The number 735 fits into 3890 5 times, leaving a remainder of 215.
Put 5 as the next digit of the answer. 
Result so far: 1175.0
If we take 3675 away from 3890, we end up with 215.
Include the next digit (9) from the dividend after 215, then repeat: 2159 / 735

On to step 7:
If we divide 2159 by 735, we get 2 and a remainder of 689.
Use 2 as the next digit of our solution. 
Result so far: 11752.0
The remainder is 689 after subtracting 1470 from 2159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6890, and continue the process.

Going ahead to step 8:
6890 divided by 735 is 9 with a remainder of 275.
Write down 9 as next digit of the result. 
Result so far: 11752.9
If we subtract 6615 from 6890, we get 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Going ahead to step 9:
735 goes into 2750 3 times with a remainder of 545.
Write down 3 as next digit of the result. 
Result so far: 11752.93
Subtracting 2205 from 2750 leaves us with 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Going ahead to step 10:
The number 735 fits into 5450 7 times, leaving a remainder of 305.
Put 7 as the next digit of the answer. 
Result so far: 11752.937
Subtracting 5145 from 5450 leaves us with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Let's proceed to step 11:
735 goes into 3050 4 times with a remainder of 110.
The next digit of our result is 4. 
Result so far: 11752.9374
Subtracting 2940 from 3050 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 12:
735 can be fit into 1100 1 times, resulting in a remainder of 365.
Put 1 as the next digit of the answer. 
Result so far: 11752.93741
If we subtract 735 from 1100, we get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Going ahead to step 13:
When dividing 3650 by 735, we get 4 with a remainder of 710.
Use 4 as the next digit of our solution. 
Result so far: 11752.937414
Subtracting 2940 from 3650 leaves us with 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

Moving on to step 14:
If we divide 7100 by 735, we get 9 and a remainder of 485.
The next digit of our result is 9. 
Result so far: 11752.9374149
If we take 6615 away from 7100, we end up with 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

On to step 15:
When dividing 4850 by 735, we get 6 with a remainder of 440.
The number 6 becomes the next digit in our result. 
Result so far: 11752.93741496
The remainder is 440 after subtracting 4410 from 4850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Our division results in 11752.93741496 with a remaining 4.4e-07.