We look at the division of 381375 by 51 
We want to figure out the number of times 381375 can be divided by 51.

On to step 1:
51 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 51

Moving on to step 2:
51 can be fit into 38 0 times, resulting in a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Bring next digit (1) of the dividend behind the 38 and repeat the process: 381 / 51

On to step 3:
When dividing 381 by 51, we get 7 with a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 24 after subtracting 357 from 381.
Bring next digit (3) of the dividend behind the 24 and repeat the process: 243 / 51

Let's proceed to step 4:
If we divide 243 by 51, we get 4 and a remainder of 39.
Record the quotient 4 as the next digit in the result. 
Result so far: 74.0
Subtracting 204 from 243 leaves us with 39.
Bring next digit (7) of the dividend behind the 39 and repeat the process: 397 / 51

Let's proceed to step 5:
51 goes into 397 7 times with a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 747.0
The remainder is 40 after subtracting 357 from 397.
Append the next digit (5) from the dividend to 40 and continue with: 405 / 51

Going ahead to step 6:
If we divide 405 by 51, we get 7 and a remainder of 48.
The number 7 becomes the next digit in our result. 
Result so far: 7477.0
Subtract 357 from 405 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 7:
51 can be fit into 480 9 times, resulting in a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 7477.9
If we take 459 away from 480, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 8:
51 can be fit into 210 4 times, resulting in a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 7477.94
The remainder is 6 after subtracting 204 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
If we divide 60 by 51, we get 1 and a remainder of 9.
The next digit of our result is 1. 
Result so far: 7477.941
Subtract 51 from 60 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 10:
If we divide 90 by 51, we get 1 and a remainder of 39.
Write down 1 as next digit of the result. 
Result so far: 7477.9411
Deduct 51 from 90 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

After the division, we end up with 7477.9411 and a remainder of 0.00039.