Let's divide 75153694 by 644
The aim is to understand the frequency of 644 in 75153694.

Advancing to step 1:
644 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 644

Let's proceed to step 2:
The number 644 fits into 75 0 times, leaving a remainder of 75.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 75, we get 75.
Grab the next digit (1) from the dividend, add it to 75, then carry on: 751 / 644

Going ahead to step 3:
644 can be fit into 751 1 times, resulting in a remainder of 107.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 644 away from 751, we end up with 107.
Grab the next digit (5) from the dividend, add it to 107, then carry on: 1075 / 644

Let's proceed to step 4:
644 goes into 1075 1 times with a remainder of 431.
Write down 1 as next digit of the result. 
Result so far: 11.0
Deduct 644 from 1075 and we're left with 431.
Fetch the next digit (3) from the dividend, attach it to 431 and continue: 4313 / 644

Advancing to step 5:
If we divide 4313 by 644, we get 6 and a remainder of 449.
Put 6 as the next digit of the answer. 
Result so far: 116.0
Deduct 3864 from 4313 and we're left with 449.
Include the next digit (6) from the dividend after 449, then repeat: 4496 / 644

Advancing to step 6:
The number 644 fits into 4496 6 times, leaving a remainder of 632.
Write down 6 as next digit of the result. 
Result so far: 1166.0
If we subtract 3864 from 4496, we get 632.
Grab the next digit (9) from the dividend, add it to 632, then carry on: 6329 / 644

Step 7:
644 goes into 6329 9 times with a remainder of 533.
Use 9 as the next digit of our solution. 
Result so far: 11669.0
Subtracting 5796 from 6329 leaves us with 533.
Fetch the next digit (4) from the dividend, attach it to 533 and continue: 5334 / 644

Step 8:
The number 644 fits into 5334 8 times, leaving a remainder of 182.
Write down 8 as next digit of the result. 
Result so far: 116698.0
If we subtract 5152 from 5334, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Let's proceed to step 9:
644 can be fit into 1820 2 times, resulting in a remainder of 532.
The next digit of our result is 2. 
Result so far: 116698.2
Deduct 1288 from 1820 and we're left with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

On to step 10:
When dividing 5320 by 644, we get 8 with a remainder of 168.
Write down 8 as next digit of the result. 
Result so far: 116698.28
Subtract 5152 from 5320 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Going ahead to step 11:
644 can be fit into 1680 2 times, resulting in a remainder of 392.
Use 2 as the next digit of our solution. 
Result so far: 116698.282
Subtract 1288 from 1680 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Moving on to step 12:
If we divide 3920 by 644, we get 6 and a remainder of 56.
The next digit of our result is 6. 
Result so far: 116698.2826
If we subtract 3864 from 3920, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 13:
644 can be fit into 560 0 times, resulting in a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 116698.2826
Subtracting 0 from 560 leaves us with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Step 14:
If we divide 5600 by 644, we get 8 and a remainder of 448.
Put 8 as the next digit of the answer. 
Result so far: 116698.282608
If we take 5152 away from 5600, we end up with 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Advancing to step 15:
When dividing 4480 by 644, we get 6 with a remainder of 616.
The next digit of our result is 6. 
Result so far: 116698.2826086
If we subtract 3864 from 4480, we get 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Going ahead to step 16:
644 can be fit into 6160 9 times, resulting in a remainder of 364.
Use 9 as the next digit of our solution. 
Result so far: 116698.28260869
Subtracting 5796 from 6160 leaves us with 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

In conclusion, the division gives 116698.28260869 with a balance of 3.64e-07.