We're dividing 51438953 by 74 
The aim is to understand the frequency of 74 in 51438953.

Moving on to step 1:
When dividing 5 by 74, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 74

On to step 2:
When dividing 51 by 74, we get 0 with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Take the next digit (4) from the dividend and append it to 51, then repeat: 514 / 74

Step 3:
When dividing 514 by 74, we get 6 with a remainder of 70.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 444 from 514, we get 70.
Take the next digit (3) from the dividend and append it to 70, then repeat: 703 / 74

Step 4:
74 goes into 703 9 times with a remainder of 37.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
Deduct 666 from 703 and we're left with 37.
Bring next digit (8) of the dividend behind the 37 and repeat the process: 378 / 74

On to step 5:
378 divided by 74 is 5 with a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 695.0
Deduct 370 from 378 and we're left with 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 74

On to step 6:
The number 74 fits into 89 1 times, leaving a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 6951.0
If we subtract 74 from 89, we get 15.
Bring next digit (5) of the dividend behind the 15 and repeat the process: 155 / 74

Going ahead to step 7:
74 can be fit into 155 2 times, resulting in a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 69512.0
If we subtract 148 from 155, we get 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 74

On to step 8:
74 can be fit into 73 0 times, resulting in a remainder of 73.
Use 0 as the next digit of our solution. 
Result so far: 695120.0
The remainder is 73 after subtracting 0 from 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 9:
730 divided by 74 is 9 with a remainder of 64.
Use 9 as the next digit of our solution. 
Result so far: 695120.9
Deduct 666 from 730 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 10:
When dividing 640 by 74, we get 8 with a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 695120.98
Deduct 592 from 640 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 11:
480 divided by 74 is 6 with a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 695120.986
If we subtract 444 from 480, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 12:
The number 74 fits into 360 4 times, leaving a remainder of 64.
The number 4 becomes the next digit in our result. 
Result so far: 695120.9864
Subtract 296 from 360 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 13:
When dividing 640 by 74, we get 8 with a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 695120.98648
If we take 592 away from 640, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 14:
The number 74 fits into 480 6 times, leaving a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 695120.986486
Subtract 444 from 480 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 15:
When dividing 360 by 74, we get 4 with a remainder of 64.
The next digit of our result is 4. 
Result so far: 695120.9864864
Deduct 296 from 360 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 16:
640 divided by 74 is 8 with a remainder of 48.
The next digit of our result is 8. 
Result so far: 695120.98648648
Subtracting 592 from 640 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 695120.98648648, with a leftover of 4.8e-08.