We're dividing 503998 by 26 
The aim is to understand the frequency of 26 in 503998.

Moving on to step 1:
When dividing 5 by 26, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 26

Moving on to step 2:
When dividing 50 by 26, we get 1 with a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 26 from 50 and we're left with 24.
Bring next digit (3) of the dividend behind the 24 and repeat the process: 243 / 26

Advancing to step 3:
26 goes into 243 9 times with a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
The remainder is 9 after subtracting 234 from 243.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 26

Advancing to step 4:
26 goes into 99 3 times with a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 193.0
Deduct 78 from 99 and we're left with 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 26

Going ahead to step 5:
219 divided by 26 is 8 with a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 1938.0
If we take 208 away from 219, we end up with 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 26

Going ahead to step 6:
When dividing 118 by 26, we get 4 with a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 19384.0
Deduct 104 from 118 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
140 divided by 26 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 19384.5
The remainder is 10 after subtracting 130 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
26 goes into 100 3 times with a remainder of 22.
Record the quotient 3 as the next digit in the result. 
Result so far: 19384.53
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 9:
When dividing 220 by 26, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 19384.538
Subtracting 208 from 220 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 10:
The number 26 fits into 120 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 19384.5384
Subtract 104 from 120 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
When dividing 160 by 26, we get 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 19384.53846
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 12:
The number 26 fits into 40 1 times, leaving a remainder of 14.
The next digit of our result is 1. 
Result so far: 19384.538461
If we take 26 away from 40, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 13:
If we divide 140 by 26, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 19384.5384615
If we subtract 130 from 140, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 14:
If we divide 100 by 26, we get 3 and a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 19384.53846153
Deduct 78 from 100 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final result is 19384.53846153 with a remainder of 2.2e-08.