52669053 divided by 646 
The aim is to understand the frequency of 646 in 52669053.

Advancing to step 1:
646 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 646

On to step 2:
If we divide 52 by 646, we get 0 and a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 52, we get 52.
Bring next digit (6) of the dividend behind the 52 and repeat the process: 526 / 646

Moving on to step 3:
If we divide 526 by 646, we get 0 and a remainder of 526.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 526 to get 526.
Append the next digit (6) from the dividend to 526 and continue with: 5266 / 646

Step 4:
646 can be fit into 5266 8 times, resulting in a remainder of 98.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we subtract 5168 from 5266, we get 98.
Bring next digit (9) of the dividend behind the 98 and repeat the process: 989 / 646

On to step 5:
If we divide 989 by 646, we get 1 and a remainder of 343.
Use 1 as the next digit of our solution. 
Result so far: 81.0
Deduct 646 from 989 and we're left with 343.
Take the next digit (0) from the dividend and append it to 343, then repeat: 3430 / 646

Step 6:
646 goes into 3430 5 times with a remainder of 200.
Record the quotient 5 as the next digit in the result. 
Result so far: 815.0
If we subtract 3230 from 3430, we get 200.
Take the next digit (5) from the dividend and append it to 200, then repeat: 2005 / 646

Going ahead to step 7:
When dividing 2005 by 646, we get 3 with a remainder of 67.
The next digit of our result is 3. 
Result so far: 8153.0
The remainder is 67 after subtracting 1938 from 2005.
Append the next digit (3) from the dividend to 67 and continue with: 673 / 646

Advancing to step 8:
When dividing 673 by 646, we get 1 with a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 81531.0
If we take 646 away from 673, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 9:
When dividing 270 by 646, we get 0 with a remainder of 270.
The number 0 becomes the next digit in our result. 
Result so far: 81531.0
Deduct 0 from 270 and we're left with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

On to step 10:
2700 divided by 646 is 4 with a remainder of 116.
Write down 4 as next digit of the result. 
Result so far: 81531.04
The remainder is 116 after subtracting 2584 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 11:
646 can be fit into 1160 1 times, resulting in a remainder of 514.
Record the quotient 1 as the next digit in the result. 
Result so far: 81531.041
The remainder is 514 after subtracting 646 from 1160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Advancing to step 12:
5140 divided by 646 is 7 with a remainder of 618.
The number 7 becomes the next digit in our result. 
Result so far: 81531.0417
Deduct 4522 from 5140 and we're left with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Going ahead to step 13:
If we divide 6180 by 646, we get 9 and a remainder of 366.
The number 9 becomes the next digit in our result. 
Result so far: 81531.04179
If we subtract 5814 from 6180, we get 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Going ahead to step 14:
When dividing 3660 by 646, we get 5 with a remainder of 430.
Write down 5 as next digit of the result. 
Result so far: 81531.041795
If we take 3230 away from 3660, we end up with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Advancing to step 15:
If we divide 4300 by 646, we get 6 and a remainder of 424.
Record the quotient 6 as the next digit in the result. 
Result so far: 81531.0417956
If we subtract 3876 from 4300, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Let's proceed to step 16:
4240 divided by 646 is 6 with a remainder of 364.
Record the quotient 6 as the next digit in the result. 
Result so far: 81531.04179566
If we take 3876 away from 4240, we end up 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.

Our division results in 81531.04179566 with a remaining 3.64e-07.