Let's divide 35441146 by 644
The aim is to understand the frequency of 644 in 35441146.

Step 1:
3 divided by 644 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 644

Step 2:
35 divided by 644 is 0 with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 35 and we're left with 35.
Fetch the next digit (4) from the dividend, attach it to 35 and continue: 354 / 644

Moving on to step 3:
When dividing 354 by 644, we get 0 with a remainder of 354.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 354 leaves us with 354.
Include the next digit (4) from the dividend after 354, then repeat: 3544 / 644

Advancing to step 4:
3544 divided by 644 is 5 with a remainder of 324.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 3220 from 3544, we get 324.
Fetch the next digit (1) from the dividend, attach it to 324 and continue: 3241 / 644

Let's proceed to step 5:
644 goes into 3241 5 times with a remainder of 21.
The next digit of our result is 5. 
Result so far: 55.0
Subtract 3220 from 3241 to get 21.
Append the next digit (1) from the dividend to 21 and continue with: 211 / 644

Step 6:
211 divided by 644 is 0 with a remainder of 211.
The next digit of our result is 0. 
Result so far: 550.0
Subtracting 0 from 211 leaves us with 211.
Fetch the next digit (4) from the dividend, attach it to 211 and continue: 2114 / 644

On to step 7:
2114 divided by 644 is 3 with a remainder of 182.
The next digit of our result is 3. 
Result so far: 5503.0
If we take 1932 away from 2114, we end up with 182.
Grab the next digit (6) from the dividend, add it to 182, then carry on: 1826 / 644

Going ahead to step 8:
644 can be fit into 1826 2 times, resulting in a remainder of 538.
The next digit of our result is 2. 
Result so far: 55032.0
Subtracting 1288 from 1826 leaves us with 538.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5380, and continue the process.

Advancing to step 9:
5380 divided by 644 is 8 with a remainder of 228.
Record the quotient 8 as the next digit in the result. 
Result so far: 55032.8
The remainder is 228 after subtracting 5152 from 5380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Going ahead to step 10:
644 goes into 2280 3 times with a remainder of 348.
Use 3 as the next digit of our solution. 
Result so far: 55032.83
The remainder is 348 after subtracting 1932 from 2280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Advancing to step 11:
644 can be fit into 3480 5 times, resulting in a remainder of 260.
The number 5 becomes the next digit in our result. 
Result so far: 55032.835
Subtract 3220 from 3480 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 12:
The number 644 fits into 2600 4 times, leaving a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 55032.8354
If we subtract 2576 from 2600, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 13:
When dividing 240 by 644, we get 0 with a remainder of 240.
Record the quotient 0 as the next digit in the result. 
Result so far: 55032.8354
Deduct 0 from 240 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 14:
If we divide 2400 by 644, we get 3 and a remainder of 468.
Use 3 as the next digit of our solution. 
Result so far: 55032.835403
Subtracting 1932 from 2400 leaves us with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

On to step 15:
When dividing 4680 by 644, we get 7 with a remainder of 172.
Put 7 as the next digit of the answer. 
Result so far: 55032.8354037
If we take 4508 away from 4680, we end up with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Moving on to step 16:
1720 divided by 644 is 2 with a remainder of 432.
The next digit of our result is 2. 
Result so far: 55032.83540372
Subtract 1288 from 1720 to get 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Our division results in 55032.83540372 with a remaining 4.32e-07.