We look at the division of 28136424 by 443 
The aim is to understand the frequency of 443 in 28136424.

Let's proceed to step 1:
The number 443 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 443

Advancing to step 2:
If we divide 28 by 443, we get 0 and a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 28, we end up with 28.
Bring next digit (1) of the dividend behind the 28 and repeat the process: 281 / 443

Step 3:
When dividing 281 by 443, we get 0 with a remainder of 281.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 281 leaves us with 281.
Grab the next digit (3) from the dividend, add it to 281, then carry on: 2813 / 443

Going ahead to step 4:
443 goes into 2813 6 times with a remainder of 155.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 155 after subtracting 2658 from 2813.
Fetch the next digit (6) from the dividend, attach it to 155 and continue: 1556 / 443

Moving on to step 5:
1556 divided by 443 is 3 with a remainder of 227.
Record the quotient 3 as the next digit in the result. 
Result so far: 63.0
The remainder is 227 after subtracting 1329 from 1556.
Grab the next digit (4) from the dividend, add it to 227, then carry on: 2274 / 443

Step 6:
If we divide 2274 by 443, we get 5 and a remainder of 59.
Use 5 as the next digit of our solution. 
Result so far: 635.0
Subtracting 2215 from 2274 leaves us with 59.
Fetch the next digit (2) from the dividend, attach it to 59 and continue: 592 / 443

On to step 7:
443 goes into 592 1 times with a remainder of 149.
Write down 1 as next digit of the result. 
Result so far: 6351.0
If we subtract 443 from 592, we get 149.
Bring next digit (4) of the dividend behind the 149 and repeat the process: 1494 / 443

Advancing to step 8:
When dividing 1494 by 443, we get 3 with a remainder of 165.
Use 3 as the next digit of our solution. 
Result so far: 63513.0
Subtract 1329 from 1494 to get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

On to step 9:
443 goes into 1650 3 times with a remainder of 321.
The next digit of our result is 3. 
Result so far: 63513.3
If we take 1329 away from 1650, we end up with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Advancing to step 10:
The number 443 fits into 3210 7 times, leaving a remainder of 109.
Use 7 as the next digit of our solution. 
Result so far: 63513.37
Deduct 3101 from 3210 and we're left with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Let's proceed to step 11:
1090 divided by 443 is 2 with a remainder of 204.
The number 2 becomes the next digit in our result. 
Result so far: 63513.372
If we take 886 away from 1090, we end up with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Going ahead to step 12:
When dividing 2040 by 443, we get 4 with a remainder of 268.
Write down 4 as next digit of the result. 
Result so far: 63513.3724
Subtracting 1772 from 2040 leaves us with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Going ahead to step 13:
2680 divided by 443 is 6 with a remainder of 22.
The next digit of our result is 6. 
Result so far: 63513.37246
The remainder is 22 after subtracting 2658 from 2680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 14:
When dividing 220 by 443, we get 0 with a remainder of 220.
Write down 0 as next digit of the result. 
Result so far: 63513.37246
If we take 0 away from 220, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Going ahead to step 15:
443 goes into 2200 4 times with a remainder of 428.
Record the quotient 4 as the next digit in the result. 
Result so far: 63513.3724604
Deduct 1772 from 2200 and we're left with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Going ahead to step 16:
When dividing 4280 by 443, we get 9 with a remainder of 293.
Record the quotient 9 as the next digit in the result. 
Result so far: 63513.37246049
If we take 3987 away from 4280, we end up with 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

The final result is 63513.37246049 with a remainder of 2.93e-07.