We look at the division of 35519441 by 428 
The aim is to understand the frequency of 428 in 35519441.

Let's proceed to step 1:
When dividing 3 by 428, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 428

On to step 2:
35 divided by 428 is 0 with a remainder of 35.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 35, we end up with 35.
Append the next digit (5) from the dividend to 35 and continue with: 355 / 428

Advancing to step 3:
428 can be fit into 355 0 times, resulting in a remainder of 355.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 355, we end up with 355.
Grab the next digit (1) from the dividend, add it to 355, then carry on: 3551 / 428

Going ahead to step 4:
3551 divided by 428 is 8 with a remainder of 127.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 3424 from 3551 and we're left with 127.
Bring next digit (9) of the dividend behind the 127 and repeat the process: 1279 / 428

Going ahead to step 5:
When dividing 1279 by 428, we get 2 with a remainder of 423.
Use 2 as the next digit of our solution. 
Result so far: 82.0
Subtract 856 from 1279 to get 423.
Fetch the next digit (4) from the dividend, attach it to 423 and continue: 4234 / 428

Step 6:
The number 428 fits into 4234 9 times, leaving a remainder of 382.
Record the quotient 9 as the next digit in the result. 
Result so far: 829.0
If we subtract 3852 from 4234, we get 382.
Take the next digit (4) from the dividend and append it to 382, then repeat: 3824 / 428

Moving on to step 7:
428 goes into 3824 8 times with a remainder of 400.
Use 8 as the next digit of our solution. 
Result so far: 8298.0
Subtract 3424 from 3824 to get 400.
Grab the next digit (1) from the dividend, add it to 400, then carry on: 4001 / 428

Moving on to step 8:
The number 428 fits into 4001 9 times, leaving a remainder of 149.
Use 9 as the next digit of our solution. 
Result so far: 82989.0
If we take 3852 away from 4001, we end up with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Going ahead to step 9:
The number 428 fits into 1490 3 times, leaving a remainder of 206.
The next digit of our result is 3. 
Result so far: 82989.3
The remainder is 206 after subtracting 1284 from 1490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Moving on to step 10:
When dividing 2060 by 428, we get 4 with a remainder of 348.
Use 4 as the next digit of our solution. 
Result so far: 82989.34
Subtract 1712 from 2060 to get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

On to step 11:
If we divide 3480 by 428, we get 8 and a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 82989.348
If we subtract 3424 from 3480, 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.

Moving on to step 12:
The number 428 fits into 560 1 times, leaving a remainder of 132.
The number 1 becomes the next digit in our result. 
Result so far: 82989.3481
If we subtract 428 from 560, we 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.

On to step 13:
428 goes into 1320 3 times with a remainder of 36.
Write down 3 as next digit of the result. 
Result so far: 82989.34813
Subtracting 1284 from 1320 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 14:
428 goes into 360 0 times with a remainder of 360.
The number 0 becomes the next digit in our result. 
Result so far: 82989.34813
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.

Let's proceed to step 15:
428 can be fit into 3600 8 times, resulting in a remainder of 176.
Write down 8 as next digit of the result. 
Result so far: 82989.3481308
If we take 3424 away from 3600, we end up with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

On to step 16:
If we divide 1760 by 428, we get 4 and a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 82989.34813084
If we subtract 1712 from 1760, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 82989.34813084 and a remainder of 4.8e-08.