We look at the division of 52351514 by 378 
We're looking to find how many times 378 goes into 52351514.

Step 1:
378 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 378

On to step 2:
378 goes into 52 0 times with a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 52, we get 52.
Bring next digit (3) of the dividend behind the 52 and repeat the process: 523 / 378

Let's proceed to step 3:
378 can be fit into 523 1 times, resulting in a remainder of 145.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 378 from 523 to get 145.
Include the next digit (5) from the dividend after 145, then repeat: 1455 / 378

Advancing to step 4:
When dividing 1455 by 378, we get 3 with a remainder of 321.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 1134 from 1455 and we're left with 321.
Take the next digit (1) from the dividend and append it to 321, then repeat: 3211 / 378

Step 5:
If we divide 3211 by 378, we get 8 and a remainder of 187.
Put 8 as the next digit of the answer. 
Result so far: 138.0
If we subtract 3024 from 3211, we get 187.
Include the next digit (5) from the dividend after 187, then repeat: 1875 / 378

Going ahead to step 6:
378 goes into 1875 4 times with a remainder of 363.
Put 4 as the next digit of the answer. 
Result so far: 1384.0
If we take 1512 away from 1875, we end up with 363.
Include the next digit (1) from the dividend after 363, then repeat: 3631 / 378

Moving on to step 7:
When dividing 3631 by 378, we get 9 with a remainder of 229.
Record the quotient 9 as the next digit in the result. 
Result so far: 13849.0
Subtract 3402 from 3631 to get 229.
Include the next digit (4) from the dividend after 229, then repeat: 2294 / 378

Moving on to step 8:
378 can be fit into 2294 6 times, resulting in a remainder of 26.
Put 6 as the next digit of the answer. 
Result so far: 138496.0
Subtracting 2268 from 2294 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 9:
The number 378 fits into 260 0 times, leaving a remainder of 260.
Record the quotient 0 as the next digit in the result. 
Result so far: 138496.0
Deduct 0 from 260 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 10:
When dividing 2600 by 378, we get 6 with a remainder of 332.
Use 6 as the next digit of our solution. 
Result so far: 138496.06
Deduct 2268 from 2600 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Advancing to step 11:
378 can be fit into 3320 8 times, resulting in a remainder of 296.
Put 8 as the next digit of the answer. 
Result so far: 138496.068
If we subtract 3024 from 3320, we get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Let's proceed to step 12:
When dividing 2960 by 378, we get 7 with a remainder of 314.
Write down 7 as next digit of the result. 
Result so far: 138496.0687
The remainder is 314 after subtracting 2646 from 2960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

On to step 13:
The number 378 fits into 3140 8 times, leaving a remainder of 116.
The number 8 becomes the next digit in our result. 
Result so far: 138496.06878
Deduct 3024 from 3140 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 14:
If we divide 1160 by 378, we get 3 and a remainder of 26.
The next digit of our result is 3. 
Result so far: 138496.068783
Deduct 1134 from 1160 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 15:
If we divide 260 by 378, we get 0 and a remainder of 260.
The next digit of our result is 0. 
Result so far: 138496.068783
If we subtract 0 from 260, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 16:
378 goes into 2600 6 times with a remainder of 332.
The next digit of our result is 6. 
Result so far: 138496.06878306
Deduct 2268 from 2600 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

After the division, we end up with 138496.06878306 and a remainder of 3.32e-07.