51225157 ÷ 738 
The aim is to understand the frequency of 738 in 51225157.

On to step 1:
If we divide 5 by 738, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 738

Going ahead to step 2:
51 divided by 738 is 0 with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Append the next digit (2) from the dividend to 51 and continue with: 512 / 738

On to step 3:
The number 738 fits into 512 0 times, leaving a remainder of 512.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 512 after subtracting 0 from 512.
Grab the next digit (2) from the dividend, add it to 512, then carry on: 5122 / 738

Step 4:
738 can be fit into 5122 6 times, resulting in a remainder of 694.
Put 6 as the next digit of the answer. 
Result so far: 6.0
The remainder is 694 after subtracting 4428 from 5122.
Bring next digit (5) of the dividend behind the 694 and repeat the process: 6945 / 738

Let's proceed to step 5:
738 can be fit into 6945 9 times, resulting in a remainder of 303.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
Deduct 6642 from 6945 and we're left with 303.
Take the next digit (1) from the dividend and append it to 303, then repeat: 3031 / 738

Let's proceed to step 6:
738 can be fit into 3031 4 times, resulting in a remainder of 79.
Record the quotient 4 as the next digit in the result. 
Result so far: 694.0
The remainder is 79 after subtracting 2952 from 3031.
Take the next digit (5) from the dividend and append it to 79, then repeat: 795 / 738

Advancing to step 7:
When dividing 795 by 738, we get 1 with a remainder of 57.
Record the quotient 1 as the next digit in the result. 
Result so far: 6941.0
If we take 738 away from 795, we end up with 57.
Include the next digit (7) from the dividend after 57, then repeat: 577 / 738

Step 8:
738 can be fit into 577 0 times, resulting in a remainder of 577.
The next digit of our result is 0. 
Result so far: 69410.0
If we subtract 0 from 577, we get 577.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5770, and continue the process.

Going ahead to step 9:
The number 738 fits into 5770 7 times, leaving a remainder of 604.
The number 7 becomes the next digit in our result. 
Result so far: 69410.7
Deduct 5166 from 5770 and we're left with 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Let's proceed to step 10:
When dividing 6040 by 738, we get 8 with a remainder of 136.
Write down 8 as next digit of the result. 
Result so far: 69410.78
Deduct 5904 from 6040 and we're left with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Advancing to step 11:
738 goes into 1360 1 times with a remainder of 622.
Use 1 as the next digit of our solution. 
Result so far: 69410.781
Deduct 738 from 1360 and we're left with 622.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6220, and continue the process.

Going ahead to step 12:
738 can be fit into 6220 8 times, resulting in a remainder of 316.
Put 8 as the next digit of the answer. 
Result so far: 69410.7818
If we take 5904 away from 6220, we end up with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

On to step 13:
3160 divided by 738 is 4 with a remainder of 208.
Record the quotient 4 as the next digit in the result. 
Result so far: 69410.78184
Subtract 2952 from 3160 to get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 14:
2080 divided by 738 is 2 with a remainder of 604.
Put 2 as the next digit of the answer. 
Result so far: 69410.781842
If we take 1476 away from 2080, we end up with 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Going ahead to step 15:
When dividing 6040 by 738, we get 8 with a remainder of 136.
The next digit of our result is 8. 
Result so far: 69410.7818428
The remainder is 136 after subtracting 5904 from 6040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Advancing to step 16:
If we divide 1360 by 738, we get 1 and a remainder of 622.
Use 1 as the next digit of our solution. 
Result so far: 69410.78184281
If we subtract 738 from 1360, we get 622.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6220, and continue the process.

In conclusion, the division gives 69410.78184281 with a balance of 6.22e-07.