7748401 divided by 799 
The aim is to understand the frequency of 799 in 7748401.

Step 1:
799 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 799

On to step 2:
77 divided by 799 is 0 with a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Bring next digit (4) of the dividend behind the 77 and repeat the process: 774 / 799

Moving on to step 3:
774 divided by 799 is 0 with a remainder of 774.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 774 leaves us with 774.
Bring next digit (8) of the dividend behind the 774 and repeat the process: 7748 / 799

Advancing to step 4:
799 can be fit into 7748 9 times, resulting in a remainder of 557.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 7191 from 7748, we get 557.
Bring next digit (4) of the dividend behind the 557 and repeat the process: 5574 / 799

Going ahead to step 5:
The number 799 fits into 5574 6 times, leaving a remainder of 780.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
Subtract 4794 from 5574 to get 780.
Take the next digit (0) from the dividend and append it to 780, then repeat: 7800 / 799

On to step 6:
799 goes into 7800 9 times with a remainder of 609.
Write down 9 as next digit of the result. 
Result so far: 969.0
If we take 7191 away from 7800, we end up with 609.
Fetch the next digit (1) from the dividend, attach it to 609 and continue: 6091 / 799

Going ahead to step 7:
The number 799 fits into 6091 7 times, leaving a remainder of 498.
Put 7 as the next digit of the answer. 
Result so far: 9697.0
Subtracting 5593 from 6091 leaves us with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Let's proceed to step 8:
The number 799 fits into 4980 6 times, leaving a remainder of 186.
The number 6 becomes the next digit in our result. 
Result so far: 9697.6
If we subtract 4794 from 4980, we get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Advancing to step 9:
If we divide 1860 by 799, we get 2 and a remainder of 262.
Record the quotient 2 as the next digit in the result. 
Result so far: 9697.62
Subtracting 1598 from 1860 leaves us with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Moving on to step 10:
The number 799 fits into 2620 3 times, leaving a remainder of 223.
Write down 3 as next digit of the result. 
Result so far: 9697.623
If we take 2397 away from 2620, we end up with 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Advancing to step 11:
2230 divided by 799 is 2 with a remainder of 632.
Use 2 as the next digit of our solution. 
Result so far: 9697.6232
If we subtract 1598 from 2230, we get 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Advancing to step 12:
The number 799 fits into 6320 7 times, leaving a remainder of 727.
The next digit of our result is 7. 
Result so far: 9697.62327
Deduct 5593 from 6320 and we're left with 727.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7270, and continue the process.

Going ahead to step 13:
799 goes into 7270 9 times with a remainder of 79.
The next digit of our result is 9. 
Result so far: 9697.623279
If we take 7191 away from 7270, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 14:
799 can be fit into 790 0 times, resulting in a remainder of 790.
The next digit of our result is 0. 
Result so far: 9697.623279
The remainder is 790 after subtracting 0 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7900, and continue the process.

Step 15:
When dividing 7900 by 799, we get 9 with a remainder of 709.
Write down 9 as next digit of the result. 
Result so far: 9697.62327909
If we subtract 7191 from 7900, we get 709.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7090, and continue the process.

After the division, we end up with 9697.62327909 and a remainder of 7.09e-07.