8840225 ÷ 428 
The aim is to understand the frequency of 428 in 8840225.

On to step 1:
8 divided by 428 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 428

Advancing to step 2:
The number 428 fits into 88 0 times, leaving a remainder of 88.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 88, we get 88.
Append the next digit (4) from the dividend to 88 and continue with: 884 / 428

Advancing to step 3:
428 goes into 884 2 times with a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 856 from 884 and we're left with 28.
Take the next digit (0) from the dividend and append it to 28, then repeat: 280 / 428

Going ahead to step 4:
When dividing 280 by 428, we get 0 with a remainder of 280.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we subtract 0 from 280, we get 280.
Take the next digit (2) from the dividend and append it to 280, then repeat: 2802 / 428

Going ahead to step 5:
If we divide 2802 by 428, we get 6 and a remainder of 234.
The next digit of our result is 6. 
Result so far: 206.0
Deduct 2568 from 2802 and we're left with 234.
Grab the next digit (2) from the dividend, add it to 234, then carry on: 2342 / 428

On to step 6:
The number 428 fits into 2342 5 times, leaving a remainder of 202.
Write down 5 as next digit of the result. 
Result so far: 2065.0
If we take 2140 away from 2342, we end up with 202.
Bring next digit (5) of the dividend behind the 202 and repeat the process: 2025 / 428

Advancing to step 7:
428 goes into 2025 4 times with a remainder of 313.
Put 4 as the next digit of the answer. 
Result so far: 20654.0
Subtracting 1712 from 2025 leaves us with 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Step 8:
428 goes into 3130 7 times with a remainder of 134.
Write down 7 as next digit of the result. 
Result so far: 20654.7
If we subtract 2996 from 3130, we get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Advancing to step 9:
When dividing 1340 by 428, we get 3 with a remainder of 56.
Use 3 as the next digit of our solution. 
Result so far: 20654.73
If we subtract 1284 from 1340, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 10:
If we divide 560 by 428, we get 1 and a remainder of 132.
The number 1 becomes the next digit in our result. 
Result so far: 20654.731
Subtract 428 from 560 to get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Going ahead to step 11:
When dividing 1320 by 428, we get 3 with a remainder of 36.
Write down 3 as next digit of the result. 
Result so far: 20654.7313
The remainder is 36 after subtracting 1284 from 1320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 12:
428 goes into 360 0 times with a remainder of 360.
The number 0 becomes the next digit in our result. 
Result so far: 20654.7313
Subtract 0 from 360 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 13:
3600 divided by 428 is 8 with a remainder of 176.
Use 8 as the next digit of our solution. 
Result so far: 20654.731308
Subtract 3424 from 3600 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Advancing to step 14:
The number 428 fits into 1760 4 times, leaving a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 20654.7313084
Subtracting 1712 from 1760 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 15:
428 can be fit into 480 1 times, resulting in a remainder of 52.
Record the quotient 1 as the next digit in the result. 
Result so far: 20654.73130841
Subtracting 428 from 480 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

In conclusion, the division gives 20654.73130841 with a balance of 5.2e-08.