We're dividing 74490404 by 51 
The aim is to understand the frequency of 51 in 74490404.

Moving on to step 1:
When dividing 7 by 51, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 51

Moving on to step 2:
When dividing 74 by 51, we get 1 with a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 51 from 74 leaves us with 23.
Append the next digit (4) from the dividend to 23 and continue with: 234 / 51

Going ahead to step 3:
234 divided by 51 is 4 with a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 204 from 234, we get 30.
Fetch the next digit (9) from the dividend, attach it to 30 and continue: 309 / 51

Advancing to step 4:
When dividing 309 by 51, we get 6 with a remainder of 3.
The next digit of our result is 6. 
Result so far: 146.0
The remainder is 3 after subtracting 306 from 309.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 51

Going ahead to step 5:
The number 51 fits into 30 0 times, leaving a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 1460.0
Subtracting 0 from 30 leaves us with 30.
Include the next digit (4) from the dividend after 30, then repeat: 304 / 51

Moving on to step 6:
51 goes into 304 5 times with a remainder of 49.
The next digit of our result is 5. 
Result so far: 14605.0
Subtract 255 from 304 to get 49.
Fetch the next digit (0) from the dividend, attach it to 49 and continue: 490 / 51

On to step 7:
490 divided by 51 is 9 with a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 146059.0
If we take 459 away from 490, we end up with 31.
Append the next digit (4) from the dividend to 31 and continue with: 314 / 51

Step 8:
51 goes into 314 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 1460596.0
The remainder is 8 after subtracting 306 from 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
The number 51 fits into 80 1 times, leaving a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 1460596.1
The remainder is 29 after subtracting 51 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 10:
290 divided by 51 is 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 1460596.15
If we subtract 255 from 290, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 11:
The number 51 fits into 350 6 times, leaving a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 1460596.156
Deduct 306 from 350 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 12:
When dividing 440 by 51, we get 8 with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 1460596.1568
The remainder is 32 after subtracting 408 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 13:
When dividing 320 by 51, we get 6 with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 1460596.15686
If we subtract 306 from 320, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 14:
140 divided by 51 is 2 with a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 1460596.156862
Subtract 102 from 140 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 15:
When dividing 380 by 51, we get 7 with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 1460596.1568627
Deduct 357 from 380 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 16:
If we divide 230 by 51, we get 4 and a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 1460596.15686274
The remainder is 26 after subtracting 204 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final result is 1460596.15686274 with a remainder of 2.6e-08.