We're dividing 91230450 by 738 
The aim is to understand the frequency of 738 in 91230450.

Advancing to step 1:
When dividing 9 by 738, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 738

Moving on to step 2:
The number 738 fits into 91 0 times, leaving a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Grab the next digit (2) from the dividend, add it to 91, then carry on: 912 / 738

Advancing to step 3:
The number 738 fits into 912 1 times, leaving a remainder of 174.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 738 from 912 and we're left with 174.
Take the next digit (3) from the dividend and append it to 174, then repeat: 1743 / 738

Step 4:
738 goes into 1743 2 times with a remainder of 267.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 1476 from 1743 and we're left with 267.
Append the next digit (0) from the dividend to 267 and continue with: 2670 / 738

Step 5:
If we divide 2670 by 738, we get 3 and a remainder of 456.
Use 3 as the next digit of our solution. 
Result so far: 123.0
Subtract 2214 from 2670 to get 456.
Grab the next digit (4) from the dividend, add it to 456, then carry on: 4564 / 738

Going ahead to step 6:
4564 divided by 738 is 6 with a remainder of 136.
The number 6 becomes the next digit in our result. 
Result so far: 1236.0
Deduct 4428 from 4564 and we're left with 136.
Bring next digit (5) of the dividend behind the 136 and repeat the process: 1365 / 738

Step 7:
738 can be fit into 1365 1 times, resulting in a remainder of 627.
Record the quotient 1 as the next digit in the result. 
Result so far: 12361.0
Subtract 738 from 1365 to get 627.
Take the next digit (0) from the dividend and append it to 627, then repeat: 6270 / 738

On to step 8:
If we divide 6270 by 738, we get 8 and a remainder of 366.
The next digit of our result is 8. 
Result so far: 123618.0
The remainder is 366 after subtracting 5904 from 6270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Advancing to step 9:
738 goes into 3660 4 times with a remainder of 708.
Use 4 as the next digit of our solution. 
Result so far: 123618.4
Subtracting 2952 from 3660 leaves us with 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

Let's proceed to step 10:
When dividing 7080 by 738, we get 9 with a remainder of 438.
The number 9 becomes the next digit in our result. 
Result so far: 123618.49
The remainder is 438 after subtracting 6642 from 7080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

Going ahead to step 11:
4380 divided by 738 is 5 with a remainder of 690.
Use 5 as the next digit of our solution. 
Result so far: 123618.495
Subtracting 3690 from 4380 leaves us with 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6900, and continue the process.

Step 12:
When dividing 6900 by 738, we get 9 with a remainder of 258.
The number 9 becomes the next digit in our result. 
Result so far: 123618.4959
Subtracting 6642 from 6900 leaves us with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Step 13:
When dividing 2580 by 738, we get 3 with a remainder of 366.
Use 3 as the next digit of our solution. 
Result so far: 123618.49593
The remainder is 366 after subtracting 2214 from 2580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

On to step 14:
738 can be fit into 3660 4 times, resulting in a remainder of 708.
The next digit of our result is 4. 
Result so far: 123618.495934
Subtracting 2952 from 3660 leaves us with 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

Advancing to step 15:
738 can be fit into 7080 9 times, resulting in a remainder of 438.
Write down 9 as next digit of the result. 
Result so far: 123618.4959349
The remainder is 438 after subtracting 6642 from 7080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

Let's proceed to step 16:
When dividing 4380 by 738, we get 5 with a remainder of 690.
Record the quotient 5 as the next digit in the result. 
Result so far: 123618.49593495
If we subtract 3690 from 4380, we get 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6900, and continue the process.

The final result is 123618.49593495 with a remainder of 6.9e-07.