We're dividing 85621901 by 728 
The aim is to understand the frequency of 728 in 85621901.

Moving on to step 1:
The number 728 fits into 8 0 times, leaving 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.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 728

Moving on to step 2:
If we divide 85 by 728, we get 0 and a remainder of 85.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 85, we get 85.
Append the next digit (6) from the dividend to 85 and continue with: 856 / 728

Moving on to step 3:
If we divide 856 by 728, we get 1 and a remainder of 128.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 728 from 856 and we're left with 128.
Bring next digit (2) of the dividend behind the 128 and repeat the process: 1282 / 728

Moving on to step 4:
728 can be fit into 1282 1 times, resulting in a remainder of 554.
The next digit of our result is 1. 
Result so far: 11.0
If we subtract 728 from 1282, we get 554.
Include the next digit (1) from the dividend after 554, then repeat: 5541 / 728

Step 5:
5541 divided by 728 is 7 with a remainder of 445.
Write down 7 as next digit of the result. 
Result so far: 117.0
The remainder is 445 after subtracting 5096 from 5541.
Grab the next digit (9) from the dividend, add it to 445, then carry on: 4459 / 728

Let's proceed to step 6:
4459 divided by 728 is 6 with a remainder of 91.
Record the quotient 6 as the next digit in the result. 
Result so far: 1176.0
Subtract 4368 from 4459 to get 91.
Bring next digit (0) of the dividend behind the 91 and repeat the process: 910 / 728

On to step 7:
728 can be fit into 910 1 times, resulting in a remainder of 182.
Use 1 as the next digit of our solution. 
Result so far: 11761.0
Subtracting 728 from 910 leaves us with 182.
Fetch the next digit (1) from the dividend, attach it to 182 and continue: 1821 / 728

On to step 8:
728 goes into 1821 2 times with a remainder of 365.
The number 2 becomes the next digit in our result. 
Result so far: 117612.0
If we subtract 1456 from 1821, we get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

On to step 9:
728 goes into 3650 5 times with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 117612.5
The remainder is 10 after subtracting 3640 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 10:
The number 728 fits into 100 0 times, leaving a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 117612.5
Subtracting 0 from 100 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 11:
When dividing 1000 by 728, we get 1 with a remainder of 272.
Write down 1 as next digit of the result. 
Result so far: 117612.501
The remainder is 272 after subtracting 728 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Going ahead to step 12:
728 can be fit into 2720 3 times, resulting in a remainder of 536.
Put 3 as the next digit of the answer. 
Result so far: 117612.5013
Subtract 2184 from 2720 to get 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Step 13:
728 goes into 5360 7 times with a remainder of 264.
Record the quotient 7 as the next digit in the result. 
Result so far: 117612.50137
Subtracting 5096 from 5360 leaves us with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Let's proceed to step 14:
If we divide 2640 by 728, we get 3 and a remainder of 456.
Use 3 as the next digit of our solution. 
Result so far: 117612.501373
Deduct 2184 from 2640 and we're left with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Moving on to step 15:
When dividing 4560 by 728, we get 6 with a remainder of 192.
Write down 6 as next digit of the result. 
Result so far: 117612.5013736
Deduct 4368 from 4560 and we're left with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 16:
When dividing 1920 by 728, we get 2 with a remainder of 464.
Record the quotient 2 as the next digit in the result. 
Result so far: 117612.50137362
Subtracting 1456 from 1920 leaves us with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Our division results in 117612.50137362 with a remaining 4.64e-07.