75149686 divided by 6 
The aim is to understand the frequency of 6 in 75149686.

Let's proceed to step 1:
6 goes into 7 1 times with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 6 away from 7, we end up with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 6

On to step 2:
The number 6 fits into 15 2 times, leaving a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 12 away from 15, we end up with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 6

Moving on to step 3:
If we divide 31 by 6, we get 5 and a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 125.0
If we subtract 30 from 31, we get 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 6

Step 4:
6 goes into 14 2 times with a remainder of 2.
The next digit of our result is 2. 
Result so far: 1252.0
Deduct 12 from 14 and we're left with 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 6

Advancing to step 5:
6 can be fit into 29 4 times, resulting in a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 12524.0
Deduct 24 from 29 and we're left with 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 6

Going ahead to step 6:
6 can be fit into 56 9 times, resulting in a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 125249.0
The remainder is 2 after subtracting 54 from 56.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 6

Moving on to step 7:
6 goes into 28 4 times with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 1252494.0
If we subtract 24 from 28, we get 4.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 6

Step 8:
The number 6 fits into 46 7 times, leaving a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 12524947.0
If we take 42 away from 46, we end up 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 9:
If we divide 40 by 6, we get 6 and a remainder of 4.
The next digit of our result is 6. 
Result so far: 12524947.6
Subtracting 36 from 40 leaves us 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.

On to step 10:
40 divided by 6 is 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 12524947.66
If we take 36 away from 40, we end up 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.

After the division, we end up with 12524947.66 and a remainder of 0.004.