Let's divide 8350136 by 644
The aim is to understand the frequency of 644 in 8350136.

Let's proceed to step 1:
8 divided by 644 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 644

On to step 2:
644 can be fit into 83 0 times, resulting in a remainder of 83.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 83 to get 83.
Append the next digit (5) from the dividend to 83 and continue with: 835 / 644

Going ahead to step 3:
If we divide 835 by 644, we get 1 and a remainder of 191.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 644 from 835 and we're left with 191.
Bring next digit (0) of the dividend behind the 191 and repeat the process: 1910 / 644

Let's proceed to step 4:
The number 644 fits into 1910 2 times, leaving a remainder of 622.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtracting 1288 from 1910 leaves us with 622.
Append the next digit (1) from the dividend to 622 and continue with: 6221 / 644

Moving on to step 5:
If we divide 6221 by 644, we get 9 and a remainder of 425.
The next digit of our result is 9. 
Result so far: 129.0
Deduct 5796 from 6221 and we're left with 425.
Include the next digit (3) from the dividend after 425, then repeat: 4253 / 644

On to step 6:
The number 644 fits into 4253 6 times, leaving a remainder of 389.
Record the quotient 6 as the next digit in the result. 
Result so far: 1296.0
If we subtract 3864 from 4253, we get 389.
Fetch the next digit (6) from the dividend, attach it to 389 and continue: 3896 / 644

On to step 7:
The number 644 fits into 3896 6 times, leaving a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 12966.0
If we subtract 3864 from 3896, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 8:
644 goes into 320 0 times with a remainder of 320.
Record the quotient 0 as the next digit in the result. 
Result so far: 12966.0
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 9:
644 goes into 3200 4 times with a remainder of 624.
Put 4 as the next digit of the answer. 
Result so far: 12966.04
If we subtract 2576 from 3200, we get 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Going ahead to step 10:
When dividing 6240 by 644, we get 9 with a remainder of 444.
Use 9 as the next digit of our solution. 
Result so far: 12966.049
If we subtract 5796 from 6240, we get 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Going ahead to step 11:
4440 divided by 644 is 6 with a remainder of 576.
The number 6 becomes the next digit in our result. 
Result so far: 12966.0496
Subtracting 3864 from 4440 leaves us with 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Step 12:
When dividing 5760 by 644, we get 8 with a remainder of 608.
Use 8 as the next digit of our solution. 
Result so far: 12966.04968
The remainder is 608 after subtracting 5152 from 5760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Moving on to step 13:
644 can be fit into 6080 9 times, resulting in a remainder of 284.
Record the quotient 9 as the next digit in the result. 
Result so far: 12966.049689
The remainder is 284 after subtracting 5796 from 6080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Moving on to step 14:
644 goes into 2840 4 times with a remainder of 264.
Write down 4 as next digit of the result. 
Result so far: 12966.0496894
If we subtract 2576 from 2840, we get 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Step 15:
644 can be fit into 2640 4 times, resulting in a remainder of 64.
Write down 4 as next digit of the result. 
Result so far: 12966.04968944
If we subtract 2576 from 2640, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The quotient of the division is 12966.04968944, and the remainder is 6.4e-08.