Let's divide 85041799 by 644
The aim is to understand the frequency of 644 in 85041799.

Step 1:
The number 644 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 644

Let's proceed to step 2:
644 can be fit into 85 0 times, resulting in a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 85 leaves us with 85.
Include the next digit (0) from the dividend after 85, then repeat: 850 / 644

Advancing to step 3:
If we divide 850 by 644, we get 1 and a remainder of 206.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 644 from 850, we get 206.
Bring next digit (4) of the dividend behind the 206 and repeat the process: 2064 / 644

Going ahead to step 4:
If we divide 2064 by 644, we get 3 and a remainder of 132.
Put 3 as the next digit of the answer. 
Result so far: 13.0
If we take 1932 away from 2064, we end up with 132.
Include the next digit (1) from the dividend after 132, then repeat: 1321 / 644

Moving on to step 5:
The number 644 fits into 1321 2 times, leaving a remainder of 33.
Put 2 as the next digit of the answer. 
Result so far: 132.0
If we subtract 1288 from 1321, we get 33.
Append the next digit (7) from the dividend to 33 and continue with: 337 / 644

Advancing to step 6:
644 can be fit into 337 0 times, resulting in a remainder of 337.
Put 0 as the next digit of the answer. 
Result so far: 1320.0
If we subtract 0 from 337, we get 337.
Bring next digit (9) of the dividend behind the 337 and repeat the process: 3379 / 644

Moving on to step 7:
The number 644 fits into 3379 5 times, leaving a remainder of 159.
The next digit of our result is 5. 
Result so far: 13205.0
If we take 3220 away from 3379, we end up with 159.
Fetch the next digit (9) from the dividend, attach it to 159 and continue: 1599 / 644

Moving on to step 8:
644 goes into 1599 2 times with a remainder of 311.
Put 2 as the next digit of the answer. 
Result so far: 132052.0
The remainder is 311 after subtracting 1288 from 1599.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Let's proceed to step 9:
644 goes into 3110 4 times with a remainder of 534.
Record the quotient 4 as the next digit in the result. 
Result so far: 132052.4
Subtract 2576 from 3110 to get 534.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

Let's proceed to step 10:
When dividing 5340 by 644, we get 8 with a remainder of 188.
Put 8 as the next digit of the answer. 
Result so far: 132052.48
If we take 5152 away from 5340, we end up with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 11:
644 can be fit into 1880 2 times, resulting in a remainder of 592.
Use 2 as the next digit of our solution. 
Result so far: 132052.482
Subtracting 1288 from 1880 leaves us with 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Advancing to step 12:
644 can be fit into 5920 9 times, resulting in a remainder of 124.
The number 9 becomes the next digit in our result. 
Result so far: 132052.4829
The remainder is 124 after subtracting 5796 from 5920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Let's proceed to step 13:
The number 644 fits into 1240 1 times, leaving a remainder of 596.
Write down 1 as next digit of the result. 
Result so far: 132052.48291
If we subtract 644 from 1240, we get 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

On to step 14:
When dividing 5960 by 644, we get 9 with a remainder of 164.
Write down 9 as next digit of the result. 
Result so far: 132052.482919
If we subtract 5796 from 5960, we get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Step 15:
644 can be fit into 1640 2 times, resulting in a remainder of 352.
The number 2 becomes the next digit in our result. 
Result so far: 132052.4829192
Subtracting 1288 from 1640 leaves us with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Going ahead to step 16:
When dividing 3520 by 644, we get 5 with a remainder of 300.
The next digit of our result is 5. 
Result so far: 132052.48291925
Subtracting 3220 from 3520 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The quotient of the division is 132052.48291925, and the remainder is 3e-07.