We look at the division of 51555042 by 74 
The aim is to understand the frequency of 74 in 51555042.

Step 1:
When dividing 5 by 74, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 74

Step 2:
74 goes into 51 0 times with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Take the next digit (5) from the dividend and append it to 51, then repeat: 515 / 74

Step 3:
The number 74 fits into 515 6 times, leaving a remainder of 71.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 444 from 515 to get 71.
Append the next digit (5) from the dividend to 71 and continue with: 715 / 74

On to step 4:
74 can be fit into 715 9 times, resulting in a remainder of 49.
The number 9 becomes the next digit in our result. 
Result so far: 69.0
Subtract 666 from 715 to get 49.
Append the next digit (5) from the dividend to 49 and continue with: 495 / 74

Step 5:
74 can be fit into 495 6 times, resulting in a remainder of 51.
The number 6 becomes the next digit in our result. 
Result so far: 696.0
The remainder is 51 after subtracting 444 from 495.
Include the next digit (0) from the dividend after 51, then repeat: 510 / 74

Step 6:
510 divided by 74 is 6 with a remainder of 66.
Write down 6 as next digit of the result. 
Result so far: 6966.0
Subtract 444 from 510 to get 66.
Append the next digit (4) from the dividend to 66 and continue with: 664 / 74

Advancing to step 7:
The number 74 fits into 664 8 times, leaving a remainder of 72.
Record the quotient 8 as the next digit in the result. 
Result so far: 69668.0
Subtract 592 from 664 to get 72.
Include the next digit (2) from the dividend after 72, then repeat: 722 / 74

Moving on to step 8:
The number 74 fits into 722 9 times, leaving a remainder of 56.
Use 9 as the next digit of our solution. 
Result so far: 696689.0
If we take 666 away from 722, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 9:
74 goes into 560 7 times with a remainder of 42.
The number 7 becomes the next digit in our result. 
Result so far: 696689.7
If we subtract 518 from 560, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 10:
If we divide 420 by 74, we get 5 and a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 696689.75
The remainder is 50 after subtracting 370 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 11:
The number 74 fits into 500 6 times, leaving a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 696689.756
The remainder is 56 after subtracting 444 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 12:
If we divide 560 by 74, we get 7 and a remainder of 42.
The next digit of our result is 7. 
Result so far: 696689.7567
If we subtract 518 from 560, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 13:
If we divide 420 by 74, we get 5 and a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 696689.75675
If we take 370 away from 420, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 14:
If we divide 500 by 74, we get 6 and a remainder of 56.
Put 6 as the next digit of the answer. 
Result so far: 696689.756756
Subtract 444 from 500 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 15:
The number 74 fits into 560 7 times, leaving a remainder of 42.
Write down 7 as next digit of the result. 
Result so far: 696689.7567567
The remainder is 42 after subtracting 518 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 16:
420 divided by 74 is 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 696689.75675675
If we take 370 away from 420, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final result is 696689.75675675 with a remainder of 5e-08.