85223563 divided by 646 
The aim is to understand the frequency of 646 in 85223563.

Moving on to step 1:
When dividing 8 by 646, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 646

Step 2:
When dividing 85 by 646, we get 0 with a remainder of 85.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 85 and we're left with 85.
Include the next digit (2) from the dividend after 85, then repeat: 852 / 646

Going ahead to step 3:
The number 646 fits into 852 1 times, leaving a remainder of 206.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 646 away from 852, we end up with 206.
Grab the next digit (2) from the dividend, add it to 206, then carry on: 2062 / 646

Let's proceed to step 4:
646 goes into 2062 3 times with a remainder of 124.
Put 3 as the next digit of the answer. 
Result so far: 13.0
The remainder is 124 after subtracting 1938 from 2062.
Grab the next digit (3) from the dividend, add it to 124, then carry on: 1243 / 646

On to step 5:
1243 divided by 646 is 1 with a remainder of 597.
The number 1 becomes the next digit in our result. 
Result so far: 131.0
Subtract 646 from 1243 to get 597.
Grab the next digit (5) from the dividend, add it to 597, then carry on: 5975 / 646

Advancing to step 6:
646 goes into 5975 9 times with a remainder of 161.
Write down 9 as next digit of the result. 
Result so far: 1319.0
Deduct 5814 from 5975 and we're left with 161.
Grab the next digit (6) from the dividend, add it to 161, then carry on: 1616 / 646

Advancing to step 7:
646 goes into 1616 2 times with a remainder of 324.
Use 2 as the next digit of our solution. 
Result so far: 13192.0
If we subtract 1292 from 1616, we get 324.
Take the next digit (3) from the dividend and append it to 324, then repeat: 3243 / 646

Let's proceed to step 8:
When dividing 3243 by 646, we get 5 with a remainder of 13.
The number 5 becomes the next digit in our result. 
Result so far: 131925.0
The remainder is 13 after subtracting 3230 from 3243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 9:
646 goes into 130 0 times with a remainder of 130.
Put 0 as the next digit of the answer. 
Result so far: 131925.0
Deduct 0 from 130 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 10:
646 goes into 1300 2 times with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 131925.02
Subtracting 1292 from 1300 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 11:
When dividing 80 by 646, we get 0 with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 131925.02
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
If we divide 800 by 646, we get 1 and a remainder of 154.
Write down 1 as next digit of the result. 
Result so far: 131925.0201
Subtracting 646 from 800 leaves us with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Step 13:
The number 646 fits into 1540 2 times, leaving a remainder of 248.
Write down 2 as next digit of the result. 
Result so far: 131925.02012
Subtracting 1292 from 1540 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Step 14:
The number 646 fits into 2480 3 times, leaving a remainder of 542.
Use 3 as the next digit of our solution. 
Result so far: 131925.020123
If we take 1938 away from 2480, we end up with 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

Advancing to step 15:
646 can be fit into 5420 8 times, resulting in a remainder of 252.
Use 8 as the next digit of our solution. 
Result so far: 131925.0201238
If we take 5168 away from 5420, we end up with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

On to step 16:
646 can be fit into 2520 3 times, resulting in a remainder of 582.
Record the quotient 3 as the next digit in the result. 
Result so far: 131925.02012383
The remainder is 582 after subtracting 1938 from 2520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

In conclusion, the division gives 131925.02012383 with a balance of 5.82e-07.