We look at the division of 77530 by 74 
The aim is to understand the frequency of 74 in 77530.

Going ahead to step 1:
The number 74 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 74

On to step 2:
74 goes into 77 1 times with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 74 from 77 and we're left with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 74

Let's proceed to step 3:
If we divide 35 by 74, we get 0 and a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtracting 0 from 35 leaves us with 35.
Fetch the next digit (3) from the dividend, attach it to 35 and continue: 353 / 74

Moving on to step 4:
The number 74 fits into 353 4 times, leaving a remainder of 57.
Use 4 as the next digit of our solution. 
Result so far: 104.0
Subtracting 296 from 353 leaves us with 57.
Bring next digit (0) of the dividend behind the 57 and repeat the process: 570 / 74

On to step 5:
570 divided by 74 is 7 with a remainder of 52.
Record the quotient 7 as the next digit in the result. 
Result so far: 1047.0
Subtracting 518 from 570 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 6:
The number 74 fits into 520 7 times, leaving a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 1047.7
Subtracting 518 from 520 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
When dividing 20 by 74, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 1047.7
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
74 goes into 200 2 times with a remainder of 52.
Write down 2 as next digit of the result. 
Result so far: 1047.702
Subtracting 148 from 200 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 9:
If we divide 520 by 74, we get 7 and a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 1047.7027
The remainder is 2 after subtracting 518 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 10:
If we divide 20 by 74, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 1047.7027
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
200 divided by 74 is 2 with a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 1047.702702
Deduct 148 from 200 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 12:
When dividing 520 by 74, we get 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 1047.7027027
If we subtract 518 from 520, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 13:
The number 74 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 1047.7027027
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 1047.7027027 and a remainder of 2e-08.