We look at the division of 34184593 by 378 
The aim is to understand the frequency of 378 in 34184593.

Moving on to step 1:
The number 378 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 378

Step 2:
The number 378 fits into 34 0 times, leaving a remainder of 34.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 34 to get 34.
Grab the next digit (1) from the dividend, add it to 34, then carry on: 341 / 378

Let's proceed to step 3:
If we divide 341 by 378, we get 0 and a remainder of 341.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 341, we get 341.
Bring next digit (8) of the dividend behind the 341 and repeat the process: 3418 / 378

Advancing to step 4:
If we divide 3418 by 378, we get 9 and a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 3402 away from 3418, we end up with 16.
Include the next digit (4) from the dividend after 16, then repeat: 164 / 378

Step 5:
164 divided by 378 is 0 with a remainder of 164.
Write down 0 as next digit of the result. 
Result so far: 90.0
If we take 0 away from 164, we end up with 164.
Bring next digit (5) of the dividend behind the 164 and repeat the process: 1645 / 378

Step 6:
The number 378 fits into 1645 4 times, leaving a remainder of 133.
Use 4 as the next digit of our solution. 
Result so far: 904.0
If we subtract 1512 from 1645, we get 133.
Take the next digit (9) from the dividend and append it to 133, then repeat: 1339 / 378

Moving on to step 7:
If we divide 1339 by 378, we get 3 and a remainder of 205.
The next digit of our result is 3. 
Result so far: 9043.0
If we take 1134 away from 1339, we end up with 205.
Fetch the next digit (3) from the dividend, attach it to 205 and continue: 2053 / 378

On to step 8:
378 goes into 2053 5 times with a remainder of 163.
Use 5 as the next digit of our solution. 
Result so far: 90435.0
Subtract 1890 from 2053 to get 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

On to step 9:
When dividing 1630 by 378, we get 4 with a remainder of 118.
The number 4 becomes the next digit in our result. 
Result so far: 90435.4
The remainder is 118 after subtracting 1512 from 1630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Step 10:
378 can be fit into 1180 3 times, resulting in a remainder of 46.
Write down 3 as next digit of the result. 
Result so far: 90435.43
If we subtract 1134 from 1180, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 11:
The number 378 fits into 460 1 times, leaving a remainder of 82.
The number 1 becomes the next digit in our result. 
Result so far: 90435.431
If we subtract 378 from 460, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 12:
820 divided by 378 is 2 with a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 90435.4312
If we subtract 756 from 820, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 13:
378 goes into 640 1 times with a remainder of 262.
Put 1 as the next digit of the answer. 
Result so far: 90435.43121
Deduct 378 from 640 and we're left with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Let's proceed to step 14:
The number 378 fits into 2620 6 times, leaving a remainder of 352.
Use 6 as the next digit of our solution. 
Result so far: 90435.431216
The remainder is 352 after subtracting 2268 from 2620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Going ahead to step 15:
If we divide 3520 by 378, we get 9 and a remainder of 118.
Write down 9 as next digit of the result. 
Result so far: 90435.4312169
Subtract 3402 from 3520 to get 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Let's proceed to step 16:
378 goes into 1180 3 times with a remainder of 46.
The next digit of our result is 3. 
Result so far: 90435.43121693
If we take 1134 away from 1180, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final result is 90435.43121693 with a remainder of 4.6e-08.