We're dividing 54306343 by 378 
Let's see how many times 378 fits into 54306343.

On to step 1:
5 divided by 378 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 378

Moving on to step 2:
The number 378 fits into 54 0 times, leaving a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Bring next digit (3) of the dividend behind the 54 and repeat the process: 543 / 378

Let's proceed to step 3:
543 divided by 378 is 1 with a remainder of 165.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 378 from 543 leaves us with 165.
Bring next digit (0) of the dividend behind the 165 and repeat the process: 1650 / 378

Going ahead to step 4:
When dividing 1650 by 378, we get 4 with a remainder of 138.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we take 1512 away from 1650, we end up with 138.
Bring next digit (6) of the dividend behind the 138 and repeat the process: 1386 / 378

Moving on to step 5:
378 can be fit into 1386 3 times, resulting in a remainder of 252.
Use 3 as the next digit of our solution. 
Result so far: 143.0
If we subtract 1134 from 1386, we get 252.
Append the next digit (3) from the dividend to 252 and continue with: 2523 / 378

Moving on to step 6:
The number 378 fits into 2523 6 times, leaving a remainder of 255.
Put 6 as the next digit of the answer. 
Result so far: 1436.0
The remainder is 255 after subtracting 2268 from 2523.
Include the next digit (4) from the dividend after 255, then repeat: 2554 / 378

Going ahead to step 7:
The number 378 fits into 2554 6 times, leaving a remainder of 286.
Write down 6 as next digit of the result. 
Result so far: 14366.0
The remainder is 286 after subtracting 2268 from 2554.
Append the next digit (3) from the dividend to 286 and continue with: 2863 / 378

Moving on to step 8:
When dividing 2863 by 378, we get 7 with a remainder of 217.
The number 7 becomes the next digit in our result. 
Result so far: 143667.0
Subtracting 2646 from 2863 leaves us with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Let's proceed to step 9:
378 goes into 2170 5 times with a remainder of 280.
Use 5 as the next digit of our solution. 
Result so far: 143667.5
The remainder is 280 after subtracting 1890 from 2170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 10:
The number 378 fits into 2800 7 times, leaving a remainder of 154.
The number 7 becomes the next digit in our result. 
Result so far: 143667.57
Deduct 2646 from 2800 and we're left with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Step 11:
The number 378 fits into 1540 4 times, leaving a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 143667.574
The remainder is 28 after subtracting 1512 from 1540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 12:
If we divide 280 by 378, we get 0 and a remainder of 280.
Use 0 as the next digit of our solution. 
Result so far: 143667.574
Subtracting 0 from 280 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 13:
When dividing 2800 by 378, we get 7 with a remainder of 154.
Write down 7 as next digit of the result. 
Result so far: 143667.57407
If we take 2646 away from 2800, we end up with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Moving on to step 14:
If we divide 1540 by 378, we get 4 and a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 143667.574074
Subtracting 1512 from 1540 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 15:
If we divide 280 by 378, we get 0 and a remainder of 280.
Use 0 as the next digit of our solution. 
Result so far: 143667.574074
The remainder is 280 after subtracting 0 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Moving on to step 16:
2800 divided by 378 is 7 with a remainder of 154.
The number 7 becomes the next digit in our result. 
Result so far: 143667.57407407
Deduct 2646 from 2800 and we're left with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

After the division, we end up with 143667.57407407 and a remainder of 1.54e-07.