We're dividing 80582453 by 644 
The aim is to understand the frequency of 644 in 80582453.

Advancing to step 1:
644 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 644

On to step 2:
If we divide 80 by 644, we get 0 and a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Append the next digit (5) from the dividend to 80 and continue with: 805 / 644

On to step 3:
644 can be fit into 805 1 times, resulting in a remainder of 161.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 644 from 805, we get 161.
Take the next digit (8) from the dividend and append it to 161, then repeat: 1618 / 644

Let's proceed to step 4:
The number 644 fits into 1618 2 times, leaving a remainder of 330.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we subtract 1288 from 1618, we get 330.
Include the next digit (2) from the dividend after 330, then repeat: 3302 / 644

Advancing to step 5:
The number 644 fits into 3302 5 times, leaving a remainder of 82.
Write down 5 as next digit of the result. 
Result so far: 125.0
Subtract 3220 from 3302 to get 82.
Bring next digit (4) of the dividend behind the 82 and repeat the process: 824 / 644

Moving on to step 6:
644 can be fit into 824 1 times, resulting in a remainder of 180.
The number 1 becomes the next digit in our result. 
Result so far: 1251.0
Subtract 644 from 824 to get 180.
Bring next digit (5) of the dividend behind the 180 and repeat the process: 1805 / 644

Let's proceed to step 7:
The number 644 fits into 1805 2 times, leaving a remainder of 517.
The next digit of our result is 2. 
Result so far: 12512.0
Deduct 1288 from 1805 and we're left with 517.
Grab the next digit (3) from the dividend, add it to 517, then carry on: 5173 / 644

Step 8:
644 goes into 5173 8 times with a remainder of 21.
Use 8 as the next digit of our solution. 
Result so far: 125128.0
If we take 5152 away from 5173, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 9:
644 can be fit into 210 0 times, resulting in a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 125128.0
The remainder is 210 after subtracting 0 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Going ahead to step 10:
The number 644 fits into 2100 3 times, leaving a remainder of 168.
The number 3 becomes the next digit in our result. 
Result so far: 125128.03
Subtract 1932 from 2100 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.

Advancing to step 11:
1680 divided by 644 is 2 with a remainder of 392.
Put 2 as the next digit of the answer. 
Result so far: 125128.032
Subtracting 1288 from 1680 leaves us with 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:
644 goes into 3920 6 times with a remainder of 56.
The number 6 becomes the next digit in our result. 
Result so far: 125128.0326
Deduct 3864 from 3920 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 13:
The number 644 fits into 560 0 times, leaving a remainder of 560.
The next digit of our result is 0. 
Result so far: 125128.0326
The remainder is 560 after subtracting 0 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Moving on to step 14:
644 can be fit into 5600 8 times, resulting in a remainder of 448.
The number 8 becomes the next digit in our result. 
Result so far: 125128.032608
If we subtract 5152 from 5600, we get 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:
The number 644 fits into 4480 6 times, leaving a remainder of 616.
Use 6 as the next digit of our solution. 
Result so far: 125128.0326086
If we take 3864 away from 4480, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Step 16:
The number 644 fits into 6160 9 times, leaving a remainder of 364.
The next digit of our result is 9. 
Result so far: 125128.03260869
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 125128.03260869 with a balance of 3.64e-07.