We're dividing 51781900 by 704 
The aim is to understand the frequency of 704 in 51781900.

Going ahead to step 1:
5 divided by 704 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 704

Step 2:
704 can be fit into 51 0 times, resulting in a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Bring next digit (7) of the dividend behind the 51 and repeat the process: 517 / 704

Step 3:
704 can be fit into 517 0 times, resulting in a remainder of 517.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 517, we end up with 517.
Bring next digit (8) of the dividend behind the 517 and repeat the process: 5178 / 704

Let's proceed to step 4:
When dividing 5178 by 704, we get 7 with a remainder of 250.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 4928 from 5178, we get 250.
Append the next digit (1) from the dividend to 250 and continue with: 2501 / 704

Advancing to step 5:
The number 704 fits into 2501 3 times, leaving a remainder of 389.
Record the quotient 3 as the next digit in the result. 
Result so far: 73.0
If we subtract 2112 from 2501, we get 389.
Append the next digit (9) from the dividend to 389 and continue with: 3899 / 704

On to step 6:
704 goes into 3899 5 times with a remainder of 379.
Put 5 as the next digit of the answer. 
Result so far: 735.0
Subtract 3520 from 3899 to get 379.
Take the next digit (0) from the dividend and append it to 379, then repeat: 3790 / 704

Advancing to step 7:
704 goes into 3790 5 times with a remainder of 270.
Write down 5 as next digit of the result. 
Result so far: 7355.0
If we take 3520 away from 3790, we end up with 270.
Take the next digit (0) from the dividend and append it to 270, then repeat: 2700 / 704

Let's proceed to step 8:
704 goes into 2700 3 times with a remainder of 588.
Record the quotient 3 as the next digit in the result. 
Result so far: 73553.0
If we take 2112 away from 2700, we end up with 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

On to step 9:
704 goes into 5880 8 times with a remainder of 248.
Put 8 as the next digit of the answer. 
Result so far: 73553.8
If we subtract 5632 from 5880, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Going ahead to step 10:
The number 704 fits into 2480 3 times, leaving a remainder of 368.
Put 3 as the next digit of the answer. 
Result so far: 73553.83
Deduct 2112 from 2480 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Let's proceed to step 11:
3680 divided by 704 is 5 with a remainder of 160.
Put 5 as the next digit of the answer. 
Result so far: 73553.835
Deduct 3520 from 3680 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 12:
704 can be fit into 1600 2 times, resulting in a remainder of 192.
The next digit of our result is 2. 
Result so far: 73553.8352
Deduct 1408 from 1600 and we're left with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Advancing to step 13:
1920 divided by 704 is 2 with a remainder of 512.
The number 2 becomes the next digit in our result. 
Result so far: 73553.83522
The remainder is 512 after subtracting 1408 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

The final result is 73553.83522 with a remainder of 0.000512.