51144086 ÷ 756 
The aim is to understand the frequency of 756 in 51144086.

On to step 1:
When dividing 5 by 756, we get 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.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 756

On to step 2:
756 can be fit into 51 0 times, resulting in a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Bring next digit (1) of the dividend behind the 51 and repeat the process: 511 / 756

Going ahead to step 3:
756 can be fit into 511 0 times, resulting in a remainder of 511.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 511, we end up with 511.
Bring next digit (4) of the dividend behind the 511 and repeat the process: 5114 / 756

Step 4:
The number 756 fits into 5114 6 times, leaving a remainder of 578.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 578 after subtracting 4536 from 5114.
Append the next digit (4) from the dividend to 578 and continue with: 5784 / 756

Moving on to step 5:
756 goes into 5784 7 times with a remainder of 492.
Write down 7 as next digit of the result. 
Result so far: 67.0
Deduct 5292 from 5784 and we're left with 492.
Include the next digit (0) from the dividend after 492, then repeat: 4920 / 756

Step 6:
The number 756 fits into 4920 6 times, leaving a remainder of 384.
Put 6 as the next digit of the answer. 
Result so far: 676.0
Deduct 4536 from 4920 and we're left with 384.
Bring next digit (8) of the dividend behind the 384 and repeat the process: 3848 / 756

Step 7:
When dividing 3848 by 756, we get 5 with a remainder of 68.
Write down 5 as next digit of the result. 
Result so far: 6765.0
The remainder is 68 after subtracting 3780 from 3848.
Include the next digit (6) from the dividend after 68, then repeat: 686 / 756

Advancing to step 8:
686 divided by 756 is 0 with a remainder of 686.
Put 0 as the next digit of the answer. 
Result so far: 67650.0
The remainder is 686 after subtracting 0 from 686.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6860, and continue the process.

On to step 9:
756 goes into 6860 9 times with a remainder of 56.
Write down 9 as next digit of the result. 
Result so far: 67650.9
Deduct 6804 from 6860 and we're left 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.

Advancing to step 10:
560 divided by 756 is 0 with a remainder of 560.
Write down 0 as next digit of the result. 
Result so far: 67650.9
If we take 0 away from 560, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Advancing to step 11:
If we divide 5600 by 756, we get 7 and a remainder of 308.
Use 7 as the next digit of our solution. 
Result so far: 67650.907
Subtract 5292 from 5600 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Moving on to step 12:
756 goes into 3080 4 times with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 67650.9074
Subtracting 3024 from 3080 leaves us 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.

Going ahead to step 13:
560 divided by 756 is 0 with a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 67650.9074
If we take 0 away from 560, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Step 14:
The number 756 fits into 5600 7 times, leaving a remainder of 308.
Put 7 as the next digit of the answer. 
Result so far: 67650.907407
Deduct 5292 from 5600 and we're left with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Going ahead to step 15:
When dividing 3080 by 756, we get 4 with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 67650.9074074
Subtracting 3024 from 3080 leaves us 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.

Let's proceed to step 16:
756 goes into 560 0 times with a remainder of 560.
Record the quotient 0 as the next digit in the result. 
Result so far: 67650.9074074
If we subtract 0 from 560, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

After the division, we end up with 67650.9074074 and a remainder of 5.6e-07.