387519 ÷ 51 
We're looking to find how many times 51 goes into 387519.

On to step 1:
The number 51 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 51

Let's proceed to step 2:
38 divided by 51 is 0 with a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 38, we get 38.
Grab the next digit (7) from the dividend, add it to 38, then carry on: 387 / 51

Advancing to step 3:
51 goes into 387 7 times with a remainder of 30.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we take 357 away from 387, we end up with 30.
Take the next digit (5) from the dividend and append it to 30, then repeat: 305 / 51

Going ahead to step 4:
The number 51 fits into 305 5 times, leaving a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 75.0
Subtracting 255 from 305 leaves us with 50.
Grab the next digit (1) from the dividend, add it to 50, then carry on: 501 / 51

On to step 5:
51 goes into 501 9 times with a remainder of 42.
The number 9 becomes the next digit in our result. 
Result so far: 759.0
The remainder is 42 after subtracting 459 from 501.
Take the next digit (9) from the dividend and append it to 42, then repeat: 429 / 51

Step 6:
When dividing 429 by 51, we get 8 with a remainder of 21.
The next digit of our result is 8. 
Result so far: 7598.0
If we take 408 away from 429, 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.

Step 7:
When dividing 210 by 51, we get 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 7598.4
Subtract 204 from 210 to get 6.
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 8:
51 goes into 60 1 times with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 7598.41
Subtracting 51 from 60 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 9:
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: 7598.411
If we subtract 51 from 90, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Our division results in 7598.411 with a remaining 0.0039.