4353368 divided by 378 
The aim is to understand the frequency of 378 in 4353368.

On to step 1:
If we divide 4 by 378, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 378

Let's proceed to step 2:
378 can be fit into 43 0 times, resulting in a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Take the next digit (5) from the dividend and append it to 43, then repeat: 435 / 378

Let's proceed to step 3:
When dividing 435 by 378, we get 1 with a remainder of 57.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 378 from 435 and we're left with 57.
Bring next digit (3) of the dividend behind the 57 and repeat the process: 573 / 378

Going ahead to step 4:
The number 378 fits into 573 1 times, leaving a remainder of 195.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we subtract 378 from 573, we get 195.
Take the next digit (3) from the dividend and append it to 195, then repeat: 1953 / 378

Step 5:
The number 378 fits into 1953 5 times, leaving a remainder of 63.
Write down 5 as next digit of the result. 
Result so far: 115.0
The remainder is 63 after subtracting 1890 from 1953.
Grab the next digit (6) from the dividend, add it to 63, then carry on: 636 / 378

Going ahead to step 6:
378 goes into 636 1 times with a remainder of 258.
Write down 1 as next digit of the result. 
Result so far: 1151.0
Subtracting 378 from 636 leaves us with 258.
Include the next digit (8) from the dividend after 258, then repeat: 2588 / 378

Advancing to step 7:
The number 378 fits into 2588 6 times, leaving a remainder of 320.
Write down 6 as next digit of the result. 
Result so far: 11516.0
The remainder is 320 after subtracting 2268 from 2588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 8:
The number 378 fits into 3200 8 times, leaving a remainder of 176.
Put 8 as the next digit of the answer. 
Result so far: 11516.8
Subtract 3024 from 3200 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Advancing to step 9:
If we divide 1760 by 378, we get 4 and a remainder of 248.
Put 4 as the next digit of the answer. 
Result so far: 11516.84
Deduct 1512 from 1760 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 10:
378 can be fit into 2480 6 times, resulting in a remainder of 212.
The next digit of our result is 6. 
Result so far: 11516.846
Subtract 2268 from 2480 to get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Step 11:
When dividing 2120 by 378, we get 5 with a remainder of 230.
Write down 5 as next digit of the result. 
Result so far: 11516.8465
If we subtract 1890 from 2120, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 12:
If we divide 2300 by 378, we get 6 and a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 11516.84656
If we take 2268 away from 2300, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 13:
If we divide 320 by 378, we get 0 and a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 11516.84656
Deduct 0 from 320 and we're left with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 14:
3200 divided by 378 is 8 with a remainder of 176.
Use 8 as the next digit of our solution. 
Result so far: 11516.8465608
The remainder is 176 after subtracting 3024 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 15:
The number 378 fits into 1760 4 times, leaving a remainder of 248.
Use 4 as the next digit of our solution. 
Result so far: 11516.84656084
If we take 1512 away from 1760, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

The final outcome is 11516.84656084, with a leftover of 2.48e-07.